Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
9b254dd1 | 4 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 11 | support. |
c906108c | 12 | |
c5aa993b | 13 | This file is part of GDB. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
17 | the Free Software Foundation; either version 3 of the License, or |
18 | (at your option) any later version. | |
c906108c | 19 | |
a9762ec7 JB |
20 | This program is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
c906108c | 24 | |
c5aa993b | 25 | You should have received a copy of the GNU General Public License |
a9762ec7 | 26 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
27 | |
28 | #include "defs.h" | |
29 | #include "bfd.h" | |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
c906108c SS |
32 | #include "objfiles.h" |
33 | #include "elf/dwarf2.h" | |
34 | #include "buildsym.h" | |
35 | #include "demangle.h" | |
36 | #include "expression.h" | |
d5166ae1 | 37 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 38 | #include "macrotab.h" |
c906108c SS |
39 | #include "language.h" |
40 | #include "complaints.h" | |
357e46e7 | 41 | #include "bcache.h" |
4c2df51b DJ |
42 | #include "dwarf2expr.h" |
43 | #include "dwarf2loc.h" | |
9219021c | 44 | #include "cp-support.h" |
72bf9492 | 45 | #include "hashtab.h" |
ae038cb0 DJ |
46 | #include "command.h" |
47 | #include "gdbcmd.h" | |
4c2df51b | 48 | |
c906108c SS |
49 | #include <fcntl.h> |
50 | #include "gdb_string.h" | |
4bdf3d34 | 51 | #include "gdb_assert.h" |
c906108c | 52 | #include <sys/types.h> |
233a11ab CS |
53 | #ifdef HAVE_ZLIB_H |
54 | #include <zlib.h> | |
55 | #endif | |
c906108c | 56 | |
d8151005 DJ |
57 | /* A note on memory usage for this file. |
58 | ||
59 | At the present time, this code reads the debug info sections into | |
60 | the objfile's objfile_obstack. A definite improvement for startup | |
61 | time, on platforms which do not emit relocations for debug | |
62 | sections, would be to use mmap instead. The object's complete | |
63 | debug information is loaded into memory, partly to simplify | |
64 | absolute DIE references. | |
65 | ||
66 | Whether using obstacks or mmap, the sections should remain loaded | |
67 | until the objfile is released, and pointers into the section data | |
68 | can be used for any other data associated to the objfile (symbol | |
69 | names, type names, location expressions to name a few). */ | |
70 | ||
107d2387 | 71 | #if 0 |
357e46e7 | 72 | /* .debug_info header for a compilation unit |
c906108c SS |
73 | Because of alignment constraints, this structure has padding and cannot |
74 | be mapped directly onto the beginning of the .debug_info section. */ | |
75 | typedef struct comp_unit_header | |
76 | { | |
77 | unsigned int length; /* length of the .debug_info | |
78 | contribution */ | |
79 | unsigned short version; /* version number -- 2 for DWARF | |
80 | version 2 */ | |
81 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
82 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
83 | } | |
84 | _COMP_UNIT_HEADER; | |
85 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 86 | #endif |
c906108c SS |
87 | |
88 | /* .debug_pubnames header | |
89 | Because of alignment constraints, this structure has padding and cannot | |
90 | be mapped directly onto the beginning of the .debug_info section. */ | |
91 | typedef struct pubnames_header | |
92 | { | |
93 | unsigned int length; /* length of the .debug_pubnames | |
94 | contribution */ | |
95 | unsigned char version; /* version number -- 2 for DWARF | |
96 | version 2 */ | |
97 | unsigned int info_offset; /* offset into .debug_info section */ | |
98 | unsigned int info_size; /* byte size of .debug_info section | |
99 | portion */ | |
100 | } | |
101 | _PUBNAMES_HEADER; | |
102 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
103 | ||
104 | /* .debug_pubnames header | |
105 | Because of alignment constraints, this structure has padding and cannot | |
106 | be mapped directly onto the beginning of the .debug_info section. */ | |
107 | typedef struct aranges_header | |
108 | { | |
109 | unsigned int length; /* byte len of the .debug_aranges | |
110 | contribution */ | |
111 | unsigned short version; /* version number -- 2 for DWARF | |
112 | version 2 */ | |
113 | unsigned int info_offset; /* offset into .debug_info section */ | |
114 | unsigned char addr_size; /* byte size of an address */ | |
115 | unsigned char seg_size; /* byte size of segment descriptor */ | |
116 | } | |
117 | _ARANGES_HEADER; | |
118 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
119 | ||
120 | /* .debug_line statement program prologue | |
121 | Because of alignment constraints, this structure has padding and cannot | |
122 | be mapped directly onto the beginning of the .debug_info section. */ | |
123 | typedef struct statement_prologue | |
124 | { | |
125 | unsigned int total_length; /* byte length of the statement | |
126 | information */ | |
127 | unsigned short version; /* version number -- 2 for DWARF | |
128 | version 2 */ | |
129 | unsigned int prologue_length; /* # bytes between prologue & | |
130 | stmt program */ | |
131 | unsigned char minimum_instruction_length; /* byte size of | |
132 | smallest instr */ | |
133 | unsigned char default_is_stmt; /* initial value of is_stmt | |
134 | register */ | |
135 | char line_base; | |
136 | unsigned char line_range; | |
137 | unsigned char opcode_base; /* number assigned to first special | |
138 | opcode */ | |
139 | unsigned char *standard_opcode_lengths; | |
140 | } | |
141 | _STATEMENT_PROLOGUE; | |
142 | ||
6502dd73 DJ |
143 | static const struct objfile_data *dwarf2_objfile_data_key; |
144 | ||
145 | struct dwarf2_per_objfile | |
146 | { | |
147 | /* Sizes of debugging sections. */ | |
148 | unsigned int info_size; | |
149 | unsigned int abbrev_size; | |
150 | unsigned int line_size; | |
151 | unsigned int pubnames_size; | |
152 | unsigned int aranges_size; | |
153 | unsigned int loc_size; | |
154 | unsigned int macinfo_size; | |
155 | unsigned int str_size; | |
156 | unsigned int ranges_size; | |
157 | unsigned int frame_size; | |
158 | unsigned int eh_frame_size; | |
159 | ||
160 | /* Loaded data from the sections. */ | |
fe1b8b76 JB |
161 | gdb_byte *info_buffer; |
162 | gdb_byte *abbrev_buffer; | |
163 | gdb_byte *line_buffer; | |
164 | gdb_byte *str_buffer; | |
165 | gdb_byte *macinfo_buffer; | |
166 | gdb_byte *ranges_buffer; | |
167 | gdb_byte *loc_buffer; | |
ae038cb0 | 168 | |
10b3939b DJ |
169 | /* A list of all the compilation units. This is used to locate |
170 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
171 | struct dwarf2_per_cu_data **all_comp_units; |
172 | ||
173 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
174 | int n_comp_units; | |
175 | ||
176 | /* A chain of compilation units that are currently read in, so that | |
177 | they can be freed later. */ | |
178 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 FR |
179 | |
180 | /* A flag indicating wether this objfile has a section loaded at a | |
181 | VMA of 0. */ | |
182 | int has_section_at_zero; | |
6502dd73 DJ |
183 | }; |
184 | ||
185 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 186 | |
086df311 DJ |
187 | static asection *dwarf_info_section; |
188 | static asection *dwarf_abbrev_section; | |
189 | static asection *dwarf_line_section; | |
190 | static asection *dwarf_pubnames_section; | |
191 | static asection *dwarf_aranges_section; | |
192 | static asection *dwarf_loc_section; | |
193 | static asection *dwarf_macinfo_section; | |
194 | static asection *dwarf_str_section; | |
195 | static asection *dwarf_ranges_section; | |
196 | asection *dwarf_frame_section; | |
197 | asection *dwarf_eh_frame_section; | |
198 | ||
c906108c SS |
199 | /* names of the debugging sections */ |
200 | ||
233a11ab CS |
201 | /* Note that if the debugging section has been compressed, it might |
202 | have a name like .zdebug_info. */ | |
203 | ||
204 | #define INFO_SECTION "debug_info" | |
205 | #define ABBREV_SECTION "debug_abbrev" | |
206 | #define LINE_SECTION "debug_line" | |
207 | #define PUBNAMES_SECTION "debug_pubnames" | |
208 | #define ARANGES_SECTION "debug_aranges" | |
209 | #define LOC_SECTION "debug_loc" | |
210 | #define MACINFO_SECTION "debug_macinfo" | |
211 | #define STR_SECTION "debug_str" | |
212 | #define RANGES_SECTION "debug_ranges" | |
213 | #define FRAME_SECTION "debug_frame" | |
214 | #define EH_FRAME_SECTION "eh_frame" | |
c906108c SS |
215 | |
216 | /* local data types */ | |
217 | ||
57349743 JB |
218 | /* We hold several abbreviation tables in memory at the same time. */ |
219 | #ifndef ABBREV_HASH_SIZE | |
220 | #define ABBREV_HASH_SIZE 121 | |
221 | #endif | |
222 | ||
107d2387 AC |
223 | /* The data in a compilation unit header, after target2host |
224 | translation, looks like this. */ | |
c906108c | 225 | struct comp_unit_head |
a738430d MK |
226 | { |
227 | unsigned long length; | |
228 | short version; | |
229 | unsigned int abbrev_offset; | |
230 | unsigned char addr_size; | |
231 | unsigned char signed_addr_p; | |
57349743 | 232 | |
a738430d MK |
233 | /* Size of file offsets; either 4 or 8. */ |
234 | unsigned int offset_size; | |
57349743 | 235 | |
a738430d MK |
236 | /* Size of the length field; either 4 or 12. */ |
237 | unsigned int initial_length_size; | |
57349743 | 238 | |
a738430d MK |
239 | /* Offset to the first byte of this compilation unit header in the |
240 | .debug_info section, for resolving relative reference dies. */ | |
241 | unsigned int offset; | |
57349743 | 242 | |
a738430d MK |
243 | /* Pointer to this compilation unit header in the .debug_info |
244 | section. */ | |
fe1b8b76 | 245 | gdb_byte *cu_head_ptr; |
57349743 | 246 | |
a738430d MK |
247 | /* Pointer to the first die of this compilation unit. This will be |
248 | the first byte following the compilation unit header. */ | |
fe1b8b76 | 249 | gdb_byte *first_die_ptr; |
af34e669 | 250 | |
a738430d MK |
251 | /* Pointer to the next compilation unit header in the program. */ |
252 | struct comp_unit_head *next; | |
0d53c4c4 | 253 | |
a738430d MK |
254 | /* Base address of this compilation unit. */ |
255 | CORE_ADDR base_address; | |
0d53c4c4 | 256 | |
a738430d MK |
257 | /* Non-zero if base_address has been set. */ |
258 | int base_known; | |
259 | }; | |
c906108c | 260 | |
10b3939b DJ |
261 | /* Fixed size for the DIE hash table. */ |
262 | #ifndef REF_HASH_SIZE | |
263 | #define REF_HASH_SIZE 1021 | |
264 | #endif | |
265 | ||
e7c27a73 DJ |
266 | /* Internal state when decoding a particular compilation unit. */ |
267 | struct dwarf2_cu | |
268 | { | |
269 | /* The objfile containing this compilation unit. */ | |
270 | struct objfile *objfile; | |
271 | ||
272 | /* The header of the compilation unit. | |
273 | ||
274 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 275 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 276 | struct comp_unit_head header; |
e142c38c DJ |
277 | |
278 | struct function_range *first_fn, *last_fn, *cached_fn; | |
279 | ||
280 | /* The language we are debugging. */ | |
281 | enum language language; | |
282 | const struct language_defn *language_defn; | |
283 | ||
b0f35d58 DL |
284 | const char *producer; |
285 | ||
e142c38c DJ |
286 | /* The generic symbol table building routines have separate lists for |
287 | file scope symbols and all all other scopes (local scopes). So | |
288 | we need to select the right one to pass to add_symbol_to_list(). | |
289 | We do it by keeping a pointer to the correct list in list_in_scope. | |
290 | ||
291 | FIXME: The original dwarf code just treated the file scope as the | |
292 | first local scope, and all other local scopes as nested local | |
293 | scopes, and worked fine. Check to see if we really need to | |
294 | distinguish these in buildsym.c. */ | |
295 | struct pending **list_in_scope; | |
296 | ||
f3dd6933 DJ |
297 | /* DWARF abbreviation table associated with this compilation unit. */ |
298 | struct abbrev_info **dwarf2_abbrevs; | |
299 | ||
300 | /* Storage for the abbrev table. */ | |
301 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
302 | |
303 | /* Hash table holding all the loaded partial DIEs. */ | |
304 | htab_t partial_dies; | |
305 | ||
306 | /* Storage for things with the same lifetime as this read-in compilation | |
307 | unit, including partial DIEs. */ | |
308 | struct obstack comp_unit_obstack; | |
309 | ||
ae038cb0 DJ |
310 | /* When multiple dwarf2_cu structures are living in memory, this field |
311 | chains them all together, so that they can be released efficiently. | |
312 | We will probably also want a generation counter so that most-recently-used | |
313 | compilation units are cached... */ | |
314 | struct dwarf2_per_cu_data *read_in_chain; | |
315 | ||
316 | /* Backchain to our per_cu entry if the tree has been built. */ | |
317 | struct dwarf2_per_cu_data *per_cu; | |
318 | ||
319 | /* How many compilation units ago was this CU last referenced? */ | |
320 | int last_used; | |
321 | ||
10b3939b DJ |
322 | /* A hash table of die offsets for following references. */ |
323 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
324 | ||
325 | /* Full DIEs if read in. */ | |
326 | struct die_info *dies; | |
327 | ||
328 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
329 | units referenced by this one. Only set during full symbol processing; | |
330 | partial symbol tables do not have dependencies. */ | |
331 | htab_t dependencies; | |
332 | ||
cb1df416 DJ |
333 | /* Header data from the line table, during full symbol processing. */ |
334 | struct line_header *line_header; | |
335 | ||
ae038cb0 DJ |
336 | /* Mark used when releasing cached dies. */ |
337 | unsigned int mark : 1; | |
338 | ||
339 | /* This flag will be set if this compilation unit might include | |
340 | inter-compilation-unit references. */ | |
341 | unsigned int has_form_ref_addr : 1; | |
342 | ||
72bf9492 DJ |
343 | /* This flag will be set if this compilation unit includes any |
344 | DW_TAG_namespace DIEs. If we know that there are explicit | |
345 | DIEs for namespaces, we don't need to try to infer them | |
346 | from mangled names. */ | |
347 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
348 | }; |
349 | ||
10b3939b DJ |
350 | /* Persistent data held for a compilation unit, even when not |
351 | processing it. We put a pointer to this structure in the | |
352 | read_symtab_private field of the psymtab. If we encounter | |
353 | inter-compilation-unit references, we also maintain a sorted | |
354 | list of all compilation units. */ | |
355 | ||
ae038cb0 DJ |
356 | struct dwarf2_per_cu_data |
357 | { | |
5afb4e99 | 358 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 DJ |
359 | bytes should suffice to store the length of any compilation unit |
360 | - if it doesn't, GDB will fall over anyway. */ | |
361 | unsigned long offset; | |
5afb4e99 | 362 | unsigned long length : 30; |
ae038cb0 DJ |
363 | |
364 | /* Flag indicating this compilation unit will be read in before | |
365 | any of the current compilation units are processed. */ | |
366 | unsigned long queued : 1; | |
367 | ||
5afb4e99 DJ |
368 | /* This flag will be set if we need to load absolutely all DIEs |
369 | for this compilation unit, instead of just the ones we think | |
370 | are interesting. It gets set if we look for a DIE in the | |
371 | hash table and don't find it. */ | |
372 | unsigned int load_all_dies : 1; | |
373 | ||
ae038cb0 DJ |
374 | /* Set iff currently read in. */ |
375 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
376 | |
377 | /* If full symbols for this CU have been read in, then this field | |
378 | holds a map of DIE offsets to types. It isn't always possible | |
379 | to reconstruct this information later, so we have to preserve | |
380 | it. */ | |
1c379e20 | 381 | htab_t type_hash; |
10b3939b | 382 | |
31ffec48 DJ |
383 | /* The partial symbol table associated with this compilation unit, |
384 | or NULL for partial units (which do not have an associated | |
385 | symtab). */ | |
10b3939b | 386 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
387 | }; |
388 | ||
debd256d JB |
389 | /* The line number information for a compilation unit (found in the |
390 | .debug_line section) begins with a "statement program header", | |
391 | which contains the following information. */ | |
392 | struct line_header | |
393 | { | |
394 | unsigned int total_length; | |
395 | unsigned short version; | |
396 | unsigned int header_length; | |
397 | unsigned char minimum_instruction_length; | |
398 | unsigned char default_is_stmt; | |
399 | int line_base; | |
400 | unsigned char line_range; | |
401 | unsigned char opcode_base; | |
402 | ||
403 | /* standard_opcode_lengths[i] is the number of operands for the | |
404 | standard opcode whose value is i. This means that | |
405 | standard_opcode_lengths[0] is unused, and the last meaningful | |
406 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
407 | unsigned char *standard_opcode_lengths; | |
408 | ||
409 | /* The include_directories table. NOTE! These strings are not | |
410 | allocated with xmalloc; instead, they are pointers into | |
411 | debug_line_buffer. If you try to free them, `free' will get | |
412 | indigestion. */ | |
413 | unsigned int num_include_dirs, include_dirs_size; | |
414 | char **include_dirs; | |
415 | ||
416 | /* The file_names table. NOTE! These strings are not allocated | |
417 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
418 | Don't try to free them directly. */ | |
419 | unsigned int num_file_names, file_names_size; | |
420 | struct file_entry | |
c906108c | 421 | { |
debd256d JB |
422 | char *name; |
423 | unsigned int dir_index; | |
424 | unsigned int mod_time; | |
425 | unsigned int length; | |
aaa75496 | 426 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 427 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
428 | } *file_names; |
429 | ||
430 | /* The start and end of the statement program following this | |
6502dd73 | 431 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 432 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 433 | }; |
c906108c SS |
434 | |
435 | /* When we construct a partial symbol table entry we only | |
436 | need this much information. */ | |
437 | struct partial_die_info | |
438 | { | |
72bf9492 | 439 | /* Offset of this DIE. */ |
c906108c | 440 | unsigned int offset; |
72bf9492 DJ |
441 | |
442 | /* DWARF-2 tag for this DIE. */ | |
443 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
444 | ||
445 | /* Language code associated with this DIE. This is only used | |
446 | for the compilation unit DIE. */ | |
447 | unsigned int language : 8; | |
448 | ||
449 | /* Assorted flags describing the data found in this DIE. */ | |
450 | unsigned int has_children : 1; | |
451 | unsigned int is_external : 1; | |
452 | unsigned int is_declaration : 1; | |
453 | unsigned int has_type : 1; | |
454 | unsigned int has_specification : 1; | |
aaa75496 | 455 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
456 | unsigned int has_pc_info : 1; |
457 | ||
458 | /* Flag set if the SCOPE field of this structure has been | |
459 | computed. */ | |
460 | unsigned int scope_set : 1; | |
461 | ||
fa4028e9 JB |
462 | /* Flag set if the DIE has a byte_size attribute. */ |
463 | unsigned int has_byte_size : 1; | |
464 | ||
72bf9492 DJ |
465 | /* The name of this DIE. Normally the value of DW_AT_name, but |
466 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
467 | other fashion. */ | |
c906108c | 468 | char *name; |
57c22c6c | 469 | char *dirname; |
72bf9492 DJ |
470 | |
471 | /* The scope to prepend to our children. This is generally | |
472 | allocated on the comp_unit_obstack, so will disappear | |
473 | when this compilation unit leaves the cache. */ | |
474 | char *scope; | |
475 | ||
476 | /* The location description associated with this DIE, if any. */ | |
477 | struct dwarf_block *locdesc; | |
478 | ||
479 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
480 | CORE_ADDR lowpc; |
481 | CORE_ADDR highpc; | |
72bf9492 DJ |
482 | |
483 | /* Pointer into the info_buffer pointing at the target of | |
484 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 485 | gdb_byte *sibling; |
72bf9492 DJ |
486 | |
487 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
488 | DW_AT_specification (or DW_AT_abstract_origin or | |
489 | DW_AT_extension). */ | |
490 | unsigned int spec_offset; | |
491 | ||
aaa75496 JB |
492 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
493 | unsigned int line_offset; | |
494 | ||
72bf9492 DJ |
495 | /* Pointers to this DIE's parent, first child, and next sibling, |
496 | if any. */ | |
497 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
498 | }; |
499 | ||
500 | /* This data structure holds the information of an abbrev. */ | |
501 | struct abbrev_info | |
502 | { | |
503 | unsigned int number; /* number identifying abbrev */ | |
504 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
505 | unsigned short has_children; /* boolean */ |
506 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
507 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
508 | struct abbrev_info *next; /* next in chain */ | |
509 | }; | |
510 | ||
511 | struct attr_abbrev | |
512 | { | |
513 | enum dwarf_attribute name; | |
514 | enum dwarf_form form; | |
515 | }; | |
516 | ||
517 | /* This data structure holds a complete die structure. */ | |
518 | struct die_info | |
519 | { | |
c5aa993b | 520 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
521 | unsigned int abbrev; /* Abbrev number */ |
522 | unsigned int offset; /* Offset in .debug_info section */ | |
523 | unsigned int num_attrs; /* Number of attributes */ | |
524 | struct attribute *attrs; /* An array of attributes */ | |
525 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
526 | |
527 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
528 | points to this die's parent; CHILD points to the first child of | |
529 | this node; and all the children of a given node are chained | |
530 | together via their SIBLING fields, terminated by a die whose | |
531 | tag is zero. */ | |
639d11d3 DC |
532 | struct die_info *child; /* Its first child, if any. */ |
533 | struct die_info *sibling; /* Its next sibling, if any. */ | |
534 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 535 | |
c5aa993b | 536 | struct type *type; /* Cached type information */ |
c906108c SS |
537 | }; |
538 | ||
539 | /* Attributes have a name and a value */ | |
540 | struct attribute | |
541 | { | |
542 | enum dwarf_attribute name; | |
543 | enum dwarf_form form; | |
544 | union | |
545 | { | |
546 | char *str; | |
547 | struct dwarf_block *blk; | |
ce5d95e1 JB |
548 | unsigned long unsnd; |
549 | long int snd; | |
c906108c SS |
550 | CORE_ADDR addr; |
551 | } | |
552 | u; | |
553 | }; | |
554 | ||
5fb290d7 DJ |
555 | struct function_range |
556 | { | |
557 | const char *name; | |
558 | CORE_ADDR lowpc, highpc; | |
559 | int seen_line; | |
560 | struct function_range *next; | |
561 | }; | |
562 | ||
c906108c SS |
563 | /* Get at parts of an attribute structure */ |
564 | ||
565 | #define DW_STRING(attr) ((attr)->u.str) | |
566 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
567 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
568 | #define DW_SND(attr) ((attr)->u.snd) | |
569 | #define DW_ADDR(attr) ((attr)->u.addr) | |
570 | ||
571 | /* Blocks are a bunch of untyped bytes. */ | |
572 | struct dwarf_block | |
573 | { | |
574 | unsigned int size; | |
fe1b8b76 | 575 | gdb_byte *data; |
c906108c SS |
576 | }; |
577 | ||
c906108c SS |
578 | #ifndef ATTR_ALLOC_CHUNK |
579 | #define ATTR_ALLOC_CHUNK 4 | |
580 | #endif | |
581 | ||
c906108c SS |
582 | /* Allocate fields for structs, unions and enums in this size. */ |
583 | #ifndef DW_FIELD_ALLOC_CHUNK | |
584 | #define DW_FIELD_ALLOC_CHUNK 4 | |
585 | #endif | |
586 | ||
c906108c SS |
587 | /* A zeroed version of a partial die for initialization purposes. */ |
588 | static struct partial_die_info zeroed_partial_die; | |
589 | ||
c906108c SS |
590 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
591 | but this would require a corresponding change in unpack_field_as_long | |
592 | and friends. */ | |
593 | static int bits_per_byte = 8; | |
594 | ||
595 | /* The routines that read and process dies for a C struct or C++ class | |
596 | pass lists of data member fields and lists of member function fields | |
597 | in an instance of a field_info structure, as defined below. */ | |
598 | struct field_info | |
c5aa993b JM |
599 | { |
600 | /* List of data member and baseclasses fields. */ | |
601 | struct nextfield | |
602 | { | |
603 | struct nextfield *next; | |
604 | int accessibility; | |
605 | int virtuality; | |
606 | struct field field; | |
607 | } | |
608 | *fields; | |
c906108c | 609 | |
c5aa993b JM |
610 | /* Number of fields. */ |
611 | int nfields; | |
c906108c | 612 | |
c5aa993b JM |
613 | /* Number of baseclasses. */ |
614 | int nbaseclasses; | |
c906108c | 615 | |
c5aa993b JM |
616 | /* Set if the accesibility of one of the fields is not public. */ |
617 | int non_public_fields; | |
c906108c | 618 | |
c5aa993b JM |
619 | /* Member function fields array, entries are allocated in the order they |
620 | are encountered in the object file. */ | |
621 | struct nextfnfield | |
622 | { | |
623 | struct nextfnfield *next; | |
624 | struct fn_field fnfield; | |
625 | } | |
626 | *fnfields; | |
c906108c | 627 | |
c5aa993b JM |
628 | /* Member function fieldlist array, contains name of possibly overloaded |
629 | member function, number of overloaded member functions and a pointer | |
630 | to the head of the member function field chain. */ | |
631 | struct fnfieldlist | |
632 | { | |
633 | char *name; | |
634 | int length; | |
635 | struct nextfnfield *head; | |
636 | } | |
637 | *fnfieldlists; | |
c906108c | 638 | |
c5aa993b JM |
639 | /* Number of entries in the fnfieldlists array. */ |
640 | int nfnfields; | |
641 | }; | |
c906108c | 642 | |
10b3939b DJ |
643 | /* One item on the queue of compilation units to read in full symbols |
644 | for. */ | |
645 | struct dwarf2_queue_item | |
646 | { | |
647 | struct dwarf2_per_cu_data *per_cu; | |
648 | struct dwarf2_queue_item *next; | |
649 | }; | |
650 | ||
651 | /* The current queue. */ | |
652 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
653 | ||
ae038cb0 DJ |
654 | /* Loaded secondary compilation units are kept in memory until they |
655 | have not been referenced for the processing of this many | |
656 | compilation units. Set this to zero to disable caching. Cache | |
657 | sizes of up to at least twenty will improve startup time for | |
658 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
659 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
660 | static void |
661 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
662 | struct cmd_list_element *c, const char *value) | |
663 | { | |
664 | fprintf_filtered (file, _("\ | |
665 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
666 | value); | |
667 | } | |
668 | ||
ae038cb0 | 669 | |
c906108c SS |
670 | /* Various complaints about symbol reading that don't abort the process */ |
671 | ||
4d3c2250 KB |
672 | static void |
673 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 674 | { |
4d3c2250 | 675 | complaint (&symfile_complaints, |
e2e0b3e5 | 676 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
677 | } |
678 | ||
25e43795 DJ |
679 | static void |
680 | dwarf2_debug_line_missing_file_complaint (void) | |
681 | { | |
682 | complaint (&symfile_complaints, | |
683 | _(".debug_line section has line data without a file")); | |
684 | } | |
685 | ||
4d3c2250 KB |
686 | static void |
687 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 688 | { |
e2e0b3e5 | 689 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
690 | } |
691 | ||
4d3c2250 KB |
692 | static void |
693 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
694 | int arg3) | |
2e276125 | 695 | { |
4d3c2250 | 696 | complaint (&symfile_complaints, |
e2e0b3e5 | 697 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
698 | arg2, arg3); |
699 | } | |
700 | ||
701 | static void | |
702 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 703 | { |
4d3c2250 | 704 | complaint (&symfile_complaints, |
e2e0b3e5 | 705 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
706 | } |
707 | ||
708 | static void | |
709 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 710 | { |
4d3c2250 | 711 | complaint (&symfile_complaints, |
e2e0b3e5 | 712 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
713 | arg1); |
714 | } | |
715 | ||
716 | static void | |
717 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 718 | { |
4d3c2250 | 719 | complaint (&symfile_complaints, |
e2e0b3e5 | 720 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 721 | } |
c906108c | 722 | |
c906108c SS |
723 | /* local function prototypes */ |
724 | ||
4efb68b1 | 725 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
726 | |
727 | #if 0 | |
a14ed312 | 728 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
729 | #endif |
730 | ||
aaa75496 JB |
731 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
732 | struct objfile *); | |
733 | ||
734 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
735 | struct partial_die_info *, | |
736 | struct partial_symtab *); | |
737 | ||
a14ed312 | 738 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 739 | |
72bf9492 DJ |
740 | static void scan_partial_symbols (struct partial_die_info *, |
741 | CORE_ADDR *, CORE_ADDR *, | |
742 | struct dwarf2_cu *); | |
c906108c | 743 | |
72bf9492 DJ |
744 | static void add_partial_symbol (struct partial_die_info *, |
745 | struct dwarf2_cu *); | |
63d06c5c | 746 | |
72bf9492 | 747 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 748 | |
72bf9492 DJ |
749 | static void add_partial_namespace (struct partial_die_info *pdi, |
750 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
751 | struct dwarf2_cu *cu); | |
63d06c5c | 752 | |
72bf9492 DJ |
753 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
754 | struct dwarf2_cu *cu); | |
91c24f0a | 755 | |
fe1b8b76 JB |
756 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
757 | gdb_byte *info_ptr, | |
758 | bfd *abfd, | |
759 | struct dwarf2_cu *cu); | |
91c24f0a | 760 | |
a14ed312 | 761 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 762 | |
a14ed312 | 763 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 764 | |
fe1b8b76 | 765 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 766 | |
e7c27a73 | 767 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 768 | |
f3dd6933 | 769 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 770 | |
fe1b8b76 | 771 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 772 | struct dwarf2_cu *); |
72bf9492 | 773 | |
57349743 | 774 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 775 | struct dwarf2_cu *); |
c906108c | 776 | |
fe1b8b76 | 777 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
778 | struct dwarf2_cu *); |
779 | ||
fe1b8b76 JB |
780 | static gdb_byte *read_partial_die (struct partial_die_info *, |
781 | struct abbrev_info *abbrev, unsigned int, | |
782 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 783 | |
72bf9492 | 784 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 785 | struct dwarf2_cu *); |
72bf9492 DJ |
786 | |
787 | static void fixup_partial_die (struct partial_die_info *, | |
788 | struct dwarf2_cu *); | |
789 | ||
fe1b8b76 JB |
790 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
791 | struct dwarf2_cu *, int *); | |
c906108c | 792 | |
fe1b8b76 JB |
793 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
794 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 795 | |
fe1b8b76 JB |
796 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
797 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 798 | |
fe1b8b76 | 799 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 800 | |
fe1b8b76 | 801 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 802 | |
fe1b8b76 | 803 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 804 | |
fe1b8b76 | 805 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 806 | |
fe1b8b76 | 807 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 808 | |
fe1b8b76 | 809 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 810 | unsigned int *); |
c906108c | 811 | |
fe1b8b76 | 812 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 813 | struct comp_unit_head *, unsigned int *); |
613e1657 | 814 | |
fe1b8b76 | 815 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 816 | unsigned int *); |
613e1657 | 817 | |
fe1b8b76 | 818 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 819 | |
fe1b8b76 | 820 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 821 | |
fe1b8b76 JB |
822 | static char *read_indirect_string (bfd *, gdb_byte *, |
823 | const struct comp_unit_head *, | |
824 | unsigned int *); | |
4bdf3d34 | 825 | |
fe1b8b76 | 826 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 827 | |
fe1b8b76 | 828 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 829 | |
fe1b8b76 | 830 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 831 | |
e142c38c | 832 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 833 | |
e142c38c DJ |
834 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
835 | struct dwarf2_cu *); | |
c906108c | 836 | |
05cf31d1 JB |
837 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
838 | struct dwarf2_cu *cu); | |
839 | ||
e142c38c | 840 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 841 | |
e142c38c DJ |
842 | static struct die_info *die_specification (struct die_info *die, |
843 | struct dwarf2_cu *); | |
63d06c5c | 844 | |
debd256d JB |
845 | static void free_line_header (struct line_header *lh); |
846 | ||
aaa75496 JB |
847 | static void add_file_name (struct line_header *, char *, unsigned int, |
848 | unsigned int, unsigned int); | |
849 | ||
debd256d JB |
850 | static struct line_header *(dwarf_decode_line_header |
851 | (unsigned int offset, | |
e7c27a73 | 852 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
853 | |
854 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 855 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 856 | |
4f1520fb | 857 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 858 | |
a14ed312 | 859 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 860 | struct dwarf2_cu *); |
c906108c | 861 | |
a14ed312 | 862 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 863 | struct dwarf2_cu *); |
c906108c | 864 | |
2df3850c JM |
865 | static void dwarf2_const_value_data (struct attribute *attr, |
866 | struct symbol *sym, | |
867 | int bits); | |
868 | ||
e7c27a73 | 869 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 870 | |
e7c27a73 DJ |
871 | static struct type *die_containing_type (struct die_info *, |
872 | struct dwarf2_cu *); | |
c906108c | 873 | |
e7c27a73 | 874 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 875 | |
e7c27a73 | 876 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 877 | |
086ed43d | 878 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 879 | |
fe1b8b76 JB |
880 | static char *typename_concat (struct obstack *, |
881 | const char *prefix, | |
882 | const char *suffix, | |
987504bb | 883 | struct dwarf2_cu *); |
63d06c5c | 884 | |
e7c27a73 | 885 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 886 | |
e7c27a73 | 887 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 888 | |
a02abb62 JB |
889 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
890 | ||
e7c27a73 | 891 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 892 | |
e7c27a73 | 893 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 894 | |
e7c27a73 | 895 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 896 | |
a14ed312 | 897 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 898 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 899 | |
fae299cd DC |
900 | static void get_scope_pc_bounds (struct die_info *, |
901 | CORE_ADDR *, CORE_ADDR *, | |
902 | struct dwarf2_cu *); | |
903 | ||
801e3a5b JB |
904 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
905 | CORE_ADDR, struct dwarf2_cu *); | |
906 | ||
a14ed312 | 907 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 908 | struct dwarf2_cu *); |
c906108c | 909 | |
a14ed312 | 910 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 911 | struct type *, struct dwarf2_cu *); |
c906108c | 912 | |
a14ed312 | 913 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 914 | struct die_info *, struct type *, |
e7c27a73 | 915 | struct dwarf2_cu *); |
c906108c | 916 | |
a14ed312 | 917 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 918 | struct type *, struct dwarf2_cu *); |
c906108c | 919 | |
134d01f1 DJ |
920 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
921 | ||
922 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 923 | |
8176b9b8 DC |
924 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
925 | ||
e7c27a73 | 926 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 927 | |
e7c27a73 | 928 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 929 | |
38d518c9 | 930 | static const char *namespace_name (struct die_info *die, |
e142c38c | 931 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 932 | |
134d01f1 DJ |
933 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
934 | ||
935 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 936 | |
e7c27a73 | 937 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 938 | |
e7c27a73 | 939 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 940 | |
7ca2d3a3 DL |
941 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
942 | struct dwarf2_cu *); | |
943 | ||
e7c27a73 | 944 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 945 | |
e7c27a73 DJ |
946 | static void read_tag_ptr_to_member_type (struct die_info *, |
947 | struct dwarf2_cu *); | |
c906108c | 948 | |
e7c27a73 | 949 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 950 | |
e7c27a73 | 951 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 952 | |
e7c27a73 | 953 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 954 | |
e7c27a73 | 955 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 956 | |
e7c27a73 | 957 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 958 | |
fe1b8b76 | 959 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 960 | |
fe1b8b76 | 961 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 962 | struct dwarf2_cu *, |
fe1b8b76 | 963 | gdb_byte **new_info_ptr, |
639d11d3 DC |
964 | struct die_info *parent); |
965 | ||
fe1b8b76 | 966 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 967 | struct dwarf2_cu *, |
fe1b8b76 | 968 | gdb_byte **new_info_ptr, |
639d11d3 DC |
969 | struct die_info *parent); |
970 | ||
a14ed312 | 971 | static void free_die_list (struct die_info *); |
c906108c | 972 | |
e7c27a73 | 973 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 974 | |
e142c38c | 975 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 976 | |
e142c38c | 977 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 978 | |
e142c38c DJ |
979 | static struct die_info *dwarf2_extension (struct die_info *die, |
980 | struct dwarf2_cu *); | |
9219021c | 981 | |
a14ed312 | 982 | static char *dwarf_tag_name (unsigned int); |
c906108c | 983 | |
a14ed312 | 984 | static char *dwarf_attr_name (unsigned int); |
c906108c | 985 | |
a14ed312 | 986 | static char *dwarf_form_name (unsigned int); |
c906108c | 987 | |
a14ed312 | 988 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 989 | |
a14ed312 | 990 | static char *dwarf_bool_name (unsigned int); |
c906108c | 991 | |
a14ed312 | 992 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
993 | |
994 | #if 0 | |
a14ed312 | 995 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 996 | |
a14ed312 | 997 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
998 | #endif |
999 | ||
f9aca02d | 1000 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1001 | |
f9aca02d | 1002 | static void dump_die (struct die_info *); |
c906108c | 1003 | |
f9aca02d | 1004 | static void dump_die_list (struct die_info *); |
c906108c | 1005 | |
10b3939b DJ |
1006 | static void store_in_ref_table (unsigned int, struct die_info *, |
1007 | struct dwarf2_cu *); | |
c906108c | 1008 | |
e142c38c DJ |
1009 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1010 | struct dwarf2_cu *); | |
c906108c | 1011 | |
a02abb62 JB |
1012 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1013 | ||
10b3939b DJ |
1014 | static struct die_info *follow_die_ref (struct die_info *, |
1015 | struct attribute *, | |
1016 | struct dwarf2_cu *); | |
c906108c | 1017 | |
c906108c SS |
1018 | /* memory allocation interface */ |
1019 | ||
7b5a2f43 | 1020 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1021 | |
f3dd6933 | 1022 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1023 | |
a14ed312 | 1024 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1025 | |
e142c38c | 1026 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1027 | |
e142c38c DJ |
1028 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1029 | struct dwarf2_cu *); | |
5fb290d7 | 1030 | |
2e276125 | 1031 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1032 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1033 | |
8e19ed76 PS |
1034 | static int attr_form_is_block (struct attribute *); |
1035 | ||
3690dd37 JB |
1036 | static int attr_form_is_section_offset (struct attribute *); |
1037 | ||
1038 | static int attr_form_is_constant (struct attribute *); | |
1039 | ||
93e7bd98 DJ |
1040 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1041 | struct symbol *sym, | |
1042 | struct dwarf2_cu *cu); | |
4c2df51b | 1043 | |
fe1b8b76 JB |
1044 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1045 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1046 | |
72bf9492 DJ |
1047 | static void free_stack_comp_unit (void *); |
1048 | ||
72bf9492 DJ |
1049 | static hashval_t partial_die_hash (const void *item); |
1050 | ||
1051 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1052 | ||
ae038cb0 DJ |
1053 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1054 | (unsigned long offset, struct objfile *objfile); | |
1055 | ||
1056 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1057 | (unsigned long offset, struct objfile *objfile); | |
1058 | ||
1059 | static void free_one_comp_unit (void *); | |
1060 | ||
1061 | static void free_cached_comp_units (void *); | |
1062 | ||
1063 | static void age_cached_comp_units (void); | |
1064 | ||
1065 | static void free_one_cached_comp_unit (void *); | |
1066 | ||
1c379e20 DJ |
1067 | static void set_die_type (struct die_info *, struct type *, |
1068 | struct dwarf2_cu *); | |
1069 | ||
1c379e20 DJ |
1070 | static void reset_die_and_siblings_types (struct die_info *, |
1071 | struct dwarf2_cu *); | |
1c379e20 | 1072 | |
ae038cb0 DJ |
1073 | static void create_all_comp_units (struct objfile *); |
1074 | ||
31ffec48 DJ |
1075 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1076 | struct objfile *); | |
10b3939b DJ |
1077 | |
1078 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1079 | ||
1080 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1081 | struct dwarf2_per_cu_data *); | |
1082 | ||
ae038cb0 DJ |
1083 | static void dwarf2_mark (struct dwarf2_cu *); |
1084 | ||
1085 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1086 | ||
72019c9c GM |
1087 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1088 | ||
1089 | ||
c906108c SS |
1090 | /* Try to locate the sections we need for DWARF 2 debugging |
1091 | information and return true if we have enough to do something. */ | |
1092 | ||
1093 | int | |
6502dd73 | 1094 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1095 | { |
6502dd73 DJ |
1096 | struct dwarf2_per_objfile *data; |
1097 | ||
1098 | /* Initialize per-objfile state. */ | |
1099 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1100 | memset (data, 0, sizeof (*data)); | |
1101 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1102 | dwarf2_per_objfile = data; | |
1103 | ||
188dd5d6 DJ |
1104 | dwarf_info_section = 0; |
1105 | dwarf_abbrev_section = 0; | |
1106 | dwarf_line_section = 0; | |
1107 | dwarf_str_section = 0; | |
1108 | dwarf_macinfo_section = 0; | |
1109 | dwarf_frame_section = 0; | |
1110 | dwarf_eh_frame_section = 0; | |
1111 | dwarf_ranges_section = 0; | |
1112 | dwarf_loc_section = 0; | |
af34e669 | 1113 | |
6502dd73 | 1114 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1115 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1116 | } |
1117 | ||
233a11ab CS |
1118 | /* When loading sections, we can either look for ".<name>", or for |
1119 | * ".z<name>", which indicates a compressed section. */ | |
1120 | ||
1121 | static int | |
1122 | section_is_p (asection *sectp, const char *name) | |
1123 | { | |
1124 | return ((sectp->name[0] == '.' | |
1125 | && strcmp (sectp->name + 1, name) == 0) | |
1126 | || (sectp->name[0] == '.' && sectp->name[1] == 'z' | |
1127 | && strcmp (sectp->name + 2, name) == 0)); | |
1128 | } | |
1129 | ||
c906108c SS |
1130 | /* This function is mapped across the sections and remembers the |
1131 | offset and size of each of the debugging sections we are interested | |
1132 | in. */ | |
1133 | ||
1134 | static void | |
72dca2f5 | 1135 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1136 | { |
233a11ab | 1137 | if (section_is_p (sectp, INFO_SECTION)) |
c906108c | 1138 | { |
2c500098 | 1139 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1140 | dwarf_info_section = sectp; |
c906108c | 1141 | } |
233a11ab | 1142 | else if (section_is_p (sectp, ABBREV_SECTION)) |
c906108c | 1143 | { |
2c500098 | 1144 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1145 | dwarf_abbrev_section = sectp; |
c906108c | 1146 | } |
233a11ab | 1147 | else if (section_is_p (sectp, LINE_SECTION)) |
c906108c | 1148 | { |
2c500098 | 1149 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1150 | dwarf_line_section = sectp; |
c906108c | 1151 | } |
233a11ab | 1152 | else if (section_is_p (sectp, PUBNAMES_SECTION)) |
c906108c | 1153 | { |
2c500098 | 1154 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1155 | dwarf_pubnames_section = sectp; |
c906108c | 1156 | } |
233a11ab | 1157 | else if (section_is_p (sectp, ARANGES_SECTION)) |
c906108c | 1158 | { |
2c500098 | 1159 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1160 | dwarf_aranges_section = sectp; |
c906108c | 1161 | } |
233a11ab | 1162 | else if (section_is_p (sectp, LOC_SECTION)) |
c906108c | 1163 | { |
2c500098 | 1164 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1165 | dwarf_loc_section = sectp; |
c906108c | 1166 | } |
233a11ab | 1167 | else if (section_is_p (sectp, MACINFO_SECTION)) |
c906108c | 1168 | { |
2c500098 | 1169 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1170 | dwarf_macinfo_section = sectp; |
c906108c | 1171 | } |
233a11ab | 1172 | else if (section_is_p (sectp, STR_SECTION)) |
c906108c | 1173 | { |
2c500098 | 1174 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1175 | dwarf_str_section = sectp; |
c906108c | 1176 | } |
233a11ab | 1177 | else if (section_is_p (sectp, FRAME_SECTION)) |
b6af0555 | 1178 | { |
2c500098 | 1179 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1180 | dwarf_frame_section = sectp; |
b6af0555 | 1181 | } |
233a11ab | 1182 | else if (section_is_p (sectp, EH_FRAME_SECTION)) |
b6af0555 | 1183 | { |
3799ccc6 EZ |
1184 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1185 | if (aflag & SEC_HAS_CONTENTS) | |
1186 | { | |
2c500098 | 1187 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1188 | dwarf_eh_frame_section = sectp; |
1189 | } | |
b6af0555 | 1190 | } |
233a11ab | 1191 | else if (section_is_p (sectp, RANGES_SECTION)) |
af34e669 | 1192 | { |
2c500098 | 1193 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1194 | dwarf_ranges_section = sectp; |
af34e669 | 1195 | } |
72dca2f5 FR |
1196 | |
1197 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1198 | && bfd_section_vma (abfd, sectp) == 0) | |
1199 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1200 | } |
1201 | ||
233a11ab CS |
1202 | /* This function is called after decompressing a section, so |
1203 | dwarf2_per_objfile can record its new, uncompressed size. */ | |
1204 | ||
1205 | static void | |
1206 | dwarf2_resize_section (asection *sectp, bfd_size_type new_size) | |
1207 | { | |
1208 | if (section_is_p (sectp, INFO_SECTION)) | |
1209 | dwarf2_per_objfile->info_size = new_size; | |
1210 | else if (section_is_p (sectp, ABBREV_SECTION)) | |
1211 | dwarf2_per_objfile->abbrev_size = new_size; | |
1212 | else if (section_is_p (sectp, LINE_SECTION)) | |
1213 | dwarf2_per_objfile->line_size = new_size; | |
1214 | else if (section_is_p (sectp, PUBNAMES_SECTION)) | |
1215 | dwarf2_per_objfile->pubnames_size = new_size; | |
1216 | else if (section_is_p (sectp, ARANGES_SECTION)) | |
1217 | dwarf2_per_objfile->aranges_size = new_size; | |
1218 | else if (section_is_p (sectp, LOC_SECTION)) | |
1219 | dwarf2_per_objfile->loc_size = new_size; | |
1220 | else if (section_is_p (sectp, MACINFO_SECTION)) | |
1221 | dwarf2_per_objfile->macinfo_size = new_size; | |
1222 | else if (section_is_p (sectp, STR_SECTION)) | |
1223 | dwarf2_per_objfile->str_size = new_size; | |
1224 | else if (section_is_p (sectp, FRAME_SECTION)) | |
1225 | dwarf2_per_objfile->frame_size = new_size; | |
1226 | else if (section_is_p (sectp, EH_FRAME_SECTION)) | |
1227 | dwarf2_per_objfile->eh_frame_size = new_size; | |
1228 | else if (section_is_p (sectp, RANGES_SECTION)) | |
1229 | dwarf2_per_objfile->ranges_size = new_size; | |
1230 | else | |
1231 | internal_error (__FILE__, __LINE__, | |
1232 | _("dwarf2_resize_section: missing section_is_p check: %s"), | |
1233 | sectp->name); | |
1234 | } | |
1235 | ||
c906108c SS |
1236 | /* Build a partial symbol table. */ |
1237 | ||
1238 | void | |
fba45db2 | 1239 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1240 | { |
c906108c SS |
1241 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1242 | ||
6502dd73 DJ |
1243 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1244 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1245 | |
1246 | if (dwarf_line_section) | |
6502dd73 | 1247 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1248 | else |
6502dd73 | 1249 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1250 | |
188dd5d6 | 1251 | if (dwarf_str_section) |
6502dd73 | 1252 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1253 | else |
6502dd73 | 1254 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1255 | |
188dd5d6 | 1256 | if (dwarf_macinfo_section) |
6502dd73 | 1257 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1258 | dwarf_macinfo_section); |
2e276125 | 1259 | else |
6502dd73 | 1260 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1261 | |
188dd5d6 | 1262 | if (dwarf_ranges_section) |
6502dd73 | 1263 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1264 | else |
6502dd73 | 1265 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1266 | |
188dd5d6 | 1267 | if (dwarf_loc_section) |
6502dd73 | 1268 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1269 | else |
6502dd73 | 1270 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1271 | |
ef96bde8 EZ |
1272 | if (mainline |
1273 | || (objfile->global_psymbols.size == 0 | |
1274 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1275 | { |
1276 | init_psymbol_list (objfile, 1024); | |
1277 | } | |
1278 | ||
1279 | #if 0 | |
1280 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1281 | { | |
d4f3574e | 1282 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1283 | .debug_pubnames sections */ |
1284 | ||
d4f3574e | 1285 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1286 | } |
1287 | else | |
1288 | #endif | |
1289 | /* only test this case for now */ | |
c5aa993b | 1290 | { |
c906108c | 1291 | /* In this case we have to work a bit harder */ |
d4f3574e | 1292 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1293 | } |
1294 | } | |
1295 | ||
1296 | #if 0 | |
1297 | /* Build the partial symbol table from the information in the | |
1298 | .debug_pubnames and .debug_aranges sections. */ | |
1299 | ||
1300 | static void | |
fba45db2 | 1301 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1302 | { |
1303 | bfd *abfd = objfile->obfd; | |
1304 | char *aranges_buffer, *pubnames_buffer; | |
1305 | char *aranges_ptr, *pubnames_ptr; | |
1306 | unsigned int entry_length, version, info_offset, info_size; | |
1307 | ||
1308 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1309 | dwarf_pubnames_section); |
c906108c | 1310 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1311 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1312 | { |
613e1657 | 1313 | struct comp_unit_head cu_header; |
891d2f0b | 1314 | unsigned int bytes_read; |
613e1657 KB |
1315 | |
1316 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1317 | &bytes_read); |
613e1657 | 1318 | pubnames_ptr += bytes_read; |
c906108c SS |
1319 | version = read_1_byte (abfd, pubnames_ptr); |
1320 | pubnames_ptr += 1; | |
1321 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1322 | pubnames_ptr += 4; | |
1323 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1324 | pubnames_ptr += 4; | |
1325 | } | |
1326 | ||
1327 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1328 | dwarf_aranges_section); |
c906108c SS |
1329 | |
1330 | } | |
1331 | #endif | |
1332 | ||
107d2387 | 1333 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1334 | info_ptr. */ |
107d2387 | 1335 | |
fe1b8b76 | 1336 | static gdb_byte * |
107d2387 | 1337 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1338 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1339 | { |
1340 | int signed_addr; | |
891d2f0b | 1341 | unsigned int bytes_read; |
613e1657 KB |
1342 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1343 | &bytes_read); | |
1344 | info_ptr += bytes_read; | |
107d2387 AC |
1345 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1346 | info_ptr += 2; | |
613e1657 KB |
1347 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1348 | &bytes_read); | |
1349 | info_ptr += bytes_read; | |
107d2387 AC |
1350 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1351 | info_ptr += 1; | |
1352 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1353 | if (signed_addr < 0) | |
8e65ff28 | 1354 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1355 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1356 | cu_header->signed_addr_p = signed_addr; |
1357 | return info_ptr; | |
1358 | } | |
1359 | ||
fe1b8b76 JB |
1360 | static gdb_byte * |
1361 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1362 | bfd *abfd) |
1363 | { | |
fe1b8b76 | 1364 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1365 | |
1366 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1367 | ||
2b949cb6 | 1368 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1369 | error (_("Dwarf Error: wrong version in compilation unit header " |
1370 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1371 | 2, bfd_get_filename (abfd)); |
1372 | ||
1373 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1374 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1375 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1376 | (long) header->abbrev_offset, |
1377 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1378 | bfd_get_filename (abfd)); | |
1379 | ||
1380 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1381 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1382 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1383 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1384 | (long) header->length, |
1385 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1386 | bfd_get_filename (abfd)); | |
1387 | ||
1388 | return info_ptr; | |
1389 | } | |
1390 | ||
aaa75496 JB |
1391 | /* Allocate a new partial symtab for file named NAME and mark this new |
1392 | partial symtab as being an include of PST. */ | |
1393 | ||
1394 | static void | |
1395 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1396 | struct objfile *objfile) | |
1397 | { | |
1398 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1399 | ||
1400 | subpst->section_offsets = pst->section_offsets; | |
1401 | subpst->textlow = 0; | |
1402 | subpst->texthigh = 0; | |
1403 | ||
1404 | subpst->dependencies = (struct partial_symtab **) | |
1405 | obstack_alloc (&objfile->objfile_obstack, | |
1406 | sizeof (struct partial_symtab *)); | |
1407 | subpst->dependencies[0] = pst; | |
1408 | subpst->number_of_dependencies = 1; | |
1409 | ||
1410 | subpst->globals_offset = 0; | |
1411 | subpst->n_global_syms = 0; | |
1412 | subpst->statics_offset = 0; | |
1413 | subpst->n_static_syms = 0; | |
1414 | subpst->symtab = NULL; | |
1415 | subpst->read_symtab = pst->read_symtab; | |
1416 | subpst->readin = 0; | |
1417 | ||
1418 | /* No private part is necessary for include psymtabs. This property | |
1419 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1420 | the regular ones. */ |
58a9656e | 1421 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1422 | } |
1423 | ||
1424 | /* Read the Line Number Program data and extract the list of files | |
1425 | included by the source file represented by PST. Build an include | |
1426 | partial symtab for each of these included files. | |
1427 | ||
1428 | This procedure assumes that there *is* a Line Number Program in | |
1429 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1430 | before calling this procedure. */ | |
1431 | ||
1432 | static void | |
1433 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1434 | struct partial_die_info *pdi, | |
1435 | struct partial_symtab *pst) | |
1436 | { | |
1437 | struct objfile *objfile = cu->objfile; | |
1438 | bfd *abfd = objfile->obfd; | |
1439 | struct line_header *lh; | |
1440 | ||
1441 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1442 | if (lh == NULL) | |
1443 | return; /* No linetable, so no includes. */ | |
1444 | ||
1445 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1446 | ||
1447 | free_line_header (lh); | |
1448 | } | |
1449 | ||
1450 | ||
c906108c SS |
1451 | /* Build the partial symbol table by doing a quick pass through the |
1452 | .debug_info and .debug_abbrev sections. */ | |
1453 | ||
1454 | static void | |
fba45db2 | 1455 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1456 | { |
1457 | /* Instead of reading this into a big buffer, we should probably use | |
1458 | mmap() on architectures that support it. (FIXME) */ | |
1459 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1460 | gdb_byte *info_ptr; |
1461 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1462 | struct partial_die_info comp_unit_die; |
1463 | struct partial_symtab *pst; | |
ae038cb0 | 1464 | struct cleanup *back_to; |
e142c38c | 1465 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1466 | |
6502dd73 | 1467 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1468 | |
ae038cb0 DJ |
1469 | /* Any cached compilation units will be linked by the per-objfile |
1470 | read_in_chain. Make sure to free them when we're done. */ | |
1471 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1472 | ||
10b3939b DJ |
1473 | create_all_comp_units (objfile); |
1474 | ||
6502dd73 | 1475 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1476 | length, only the individual functions to extract them (like |
72bf9492 | 1477 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1478 | the buffer is large enough to hold another complete object. |
1479 | ||
6502dd73 DJ |
1480 | At the moment, they don't actually check that. If .debug_info |
1481 | holds just one extra byte after the last compilation unit's dies, | |
1482 | then read_comp_unit_head will happily read off the end of the | |
1483 | buffer. read_partial_die is similarly casual. Those functions | |
1484 | should be fixed. | |
af703f96 JB |
1485 | |
1486 | For this loop condition, simply checking whether there's any data | |
1487 | left at all should be sufficient. */ | |
6502dd73 DJ |
1488 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1489 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1490 | { |
f3dd6933 | 1491 | struct cleanup *back_to_inner; |
e7c27a73 | 1492 | struct dwarf2_cu cu; |
72bf9492 DJ |
1493 | struct abbrev_info *abbrev; |
1494 | unsigned int bytes_read; | |
1495 | struct dwarf2_per_cu_data *this_cu; | |
1496 | ||
c906108c | 1497 | beg_of_comp_unit = info_ptr; |
c906108c | 1498 | |
72bf9492 DJ |
1499 | memset (&cu, 0, sizeof (cu)); |
1500 | ||
1501 | obstack_init (&cu.comp_unit_obstack); | |
1502 | ||
1503 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1504 | ||
e7c27a73 | 1505 | cu.objfile = objfile; |
72bf9492 | 1506 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1507 | |
57349743 | 1508 | /* Complete the cu_header */ |
6502dd73 | 1509 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1510 | cu.header.first_die_ptr = info_ptr; |
1511 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1512 | |
e142c38c DJ |
1513 | cu.list_in_scope = &file_symbols; |
1514 | ||
c906108c | 1515 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1516 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1517 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1518 | |
10b3939b | 1519 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1520 | |
c906108c | 1521 | /* Read the compilation unit die */ |
72bf9492 DJ |
1522 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1523 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1524 | abfd, info_ptr, &cu); | |
c906108c | 1525 | |
31ffec48 DJ |
1526 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1527 | { | |
1528 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1529 | + cu.header.initial_length_size); | |
1530 | do_cleanups (back_to_inner); | |
1531 | continue; | |
1532 | } | |
1533 | ||
c906108c | 1534 | /* Set the language we're debugging */ |
e142c38c | 1535 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1536 | |
1537 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1538 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1539 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1540 | comp_unit_die.lowpc, |
1541 | objfile->global_psymbols.next, | |
1542 | objfile->static_psymbols.next); | |
1543 | ||
ae038cb0 DJ |
1544 | if (comp_unit_die.dirname) |
1545 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1546 | |
10b3939b DJ |
1547 | pst->read_symtab_private = (char *) this_cu; |
1548 | ||
613e1657 | 1549 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1550 | |
1551 | /* Store the function that reads in the rest of the symbol table */ | |
1552 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1553 | ||
10b3939b DJ |
1554 | /* If this compilation unit was already read in, free the |
1555 | cached copy in order to read it in again. This is | |
1556 | necessary because we skipped some symbols when we first | |
1557 | read in the compilation unit (see load_partial_dies). | |
1558 | This problem could be avoided, but the benefit is | |
1559 | unclear. */ | |
1560 | if (this_cu->cu != NULL) | |
1561 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1562 | |
10b3939b | 1563 | cu.per_cu = this_cu; |
ae038cb0 | 1564 | |
10b3939b DJ |
1565 | /* Note that this is a pointer to our stack frame, being |
1566 | added to a global data structure. It will be cleaned up | |
1567 | in free_stack_comp_unit when we finish with this | |
1568 | compilation unit. */ | |
1569 | this_cu->cu = &cu; | |
ae038cb0 | 1570 | |
10b3939b | 1571 | this_cu->psymtab = pst; |
ae038cb0 | 1572 | |
c906108c SS |
1573 | /* Check if comp unit has_children. |
1574 | If so, read the rest of the partial symbols from this comp unit. | |
1575 | If not, there's no more debug_info for this comp unit. */ | |
1576 | if (comp_unit_die.has_children) | |
1577 | { | |
72bf9492 DJ |
1578 | struct partial_die_info *first_die; |
1579 | ||
91c24f0a DC |
1580 | lowpc = ((CORE_ADDR) -1); |
1581 | highpc = ((CORE_ADDR) 0); | |
1582 | ||
72bf9492 DJ |
1583 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1584 | ||
1585 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1586 | |
91c24f0a DC |
1587 | /* If we didn't find a lowpc, set it to highpc to avoid |
1588 | complaints from `maint check'. */ | |
1589 | if (lowpc == ((CORE_ADDR) -1)) | |
1590 | lowpc = highpc; | |
72bf9492 | 1591 | |
c906108c SS |
1592 | /* If the compilation unit didn't have an explicit address range, |
1593 | then use the information extracted from its child dies. */ | |
0b010bcc | 1594 | if (! comp_unit_die.has_pc_info) |
c906108c | 1595 | { |
c5aa993b | 1596 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1597 | comp_unit_die.highpc = highpc; |
1598 | } | |
1599 | } | |
c5aa993b | 1600 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1601 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1602 | ||
1603 | pst->n_global_syms = objfile->global_psymbols.next - | |
1604 | (objfile->global_psymbols.list + pst->globals_offset); | |
1605 | pst->n_static_syms = objfile->static_psymbols.next - | |
1606 | (objfile->static_psymbols.list + pst->statics_offset); | |
1607 | sort_pst_symbols (pst); | |
1608 | ||
1609 | /* If there is already a psymtab or symtab for a file of this | |
1610 | name, remove it. (If there is a symtab, more drastic things | |
1611 | also happen.) This happens in VxWorks. */ | |
1612 | free_named_symtabs (pst->filename); | |
1613 | ||
dd373385 EZ |
1614 | info_ptr = beg_of_comp_unit + cu.header.length |
1615 | + cu.header.initial_length_size; | |
1616 | ||
aaa75496 JB |
1617 | if (comp_unit_die.has_stmt_list) |
1618 | { | |
1619 | /* Get the list of files included in the current compilation unit, | |
1620 | and build a psymtab for each of them. */ | |
1621 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1622 | } | |
1623 | ||
f3dd6933 | 1624 | do_cleanups (back_to_inner); |
c906108c | 1625 | } |
ae038cb0 DJ |
1626 | do_cleanups (back_to); |
1627 | } | |
1628 | ||
1629 | /* Load the DIEs for a secondary CU into memory. */ | |
1630 | ||
1631 | static void | |
1632 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1633 | { | |
1634 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1635 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1636 | struct partial_die_info comp_unit_die; |
1637 | struct dwarf2_cu *cu; | |
1638 | struct abbrev_info *abbrev; | |
1639 | unsigned int bytes_read; | |
1640 | struct cleanup *back_to; | |
1641 | ||
1642 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1643 | beg_of_comp_unit = info_ptr; | |
1644 | ||
1645 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1646 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1647 | ||
1648 | obstack_init (&cu->comp_unit_obstack); | |
1649 | ||
1650 | cu->objfile = objfile; | |
1651 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1652 | ||
1653 | /* Complete the cu_header. */ | |
1654 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1655 | cu->header.first_die_ptr = info_ptr; | |
1656 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1657 | ||
1658 | /* Read the abbrevs for this compilation unit into a table. */ | |
1659 | dwarf2_read_abbrevs (abfd, cu); | |
1660 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1661 | ||
1662 | /* Read the compilation unit die. */ | |
1663 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1664 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1665 | abfd, info_ptr, cu); | |
1666 | ||
1667 | /* Set the language we're debugging. */ | |
1668 | set_cu_language (comp_unit_die.language, cu); | |
1669 | ||
1670 | /* Link this compilation unit into the compilation unit tree. */ | |
1671 | this_cu->cu = cu; | |
1672 | cu->per_cu = this_cu; | |
1673 | ||
1674 | /* Check if comp unit has_children. | |
1675 | If so, read the rest of the partial symbols from this comp unit. | |
1676 | If not, there's no more debug_info for this comp unit. */ | |
1677 | if (comp_unit_die.has_children) | |
1678 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1679 | ||
1680 | do_cleanups (back_to); | |
1681 | } | |
1682 | ||
1683 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1684 | if an inter-comp-unit reference is found; presumably if there is one, | |
1685 | there will be many, and one will occur early in the .debug_info section. | |
1686 | So there's no point in building this list incrementally. */ | |
1687 | ||
1688 | static void | |
1689 | create_all_comp_units (struct objfile *objfile) | |
1690 | { | |
1691 | int n_allocated; | |
1692 | int n_comp_units; | |
1693 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1694 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1695 | |
1696 | n_comp_units = 0; | |
1697 | n_allocated = 10; | |
1698 | all_comp_units = xmalloc (n_allocated | |
1699 | * sizeof (struct dwarf2_per_cu_data *)); | |
1700 | ||
1701 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1702 | { | |
1703 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1704 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1705 | struct dwarf2_per_cu_data *this_cu; |
1706 | unsigned long offset; | |
891d2f0b | 1707 | unsigned int bytes_read; |
ae038cb0 DJ |
1708 | |
1709 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1710 | ||
1711 | /* Read just enough information to find out where the next | |
1712 | compilation unit is. */ | |
dd373385 | 1713 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1714 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1715 | &cu_header, &bytes_read); | |
1716 | ||
1717 | /* Save the compilation unit for later lookup. */ | |
1718 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1719 | sizeof (struct dwarf2_per_cu_data)); | |
1720 | memset (this_cu, 0, sizeof (*this_cu)); | |
1721 | this_cu->offset = offset; | |
1722 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1723 | ||
1724 | if (n_comp_units == n_allocated) | |
1725 | { | |
1726 | n_allocated *= 2; | |
1727 | all_comp_units = xrealloc (all_comp_units, | |
1728 | n_allocated | |
1729 | * sizeof (struct dwarf2_per_cu_data *)); | |
1730 | } | |
1731 | all_comp_units[n_comp_units++] = this_cu; | |
1732 | ||
1733 | info_ptr = info_ptr + this_cu->length; | |
1734 | } | |
1735 | ||
1736 | dwarf2_per_objfile->all_comp_units | |
1737 | = obstack_alloc (&objfile->objfile_obstack, | |
1738 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1739 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1740 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1741 | xfree (all_comp_units); | |
1742 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1743 | } |
1744 | ||
72bf9492 DJ |
1745 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1746 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1747 | in CU. */ | |
c906108c | 1748 | |
72bf9492 DJ |
1749 | static void |
1750 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1751 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1752 | { |
e7c27a73 | 1753 | struct objfile *objfile = cu->objfile; |
c906108c | 1754 | bfd *abfd = objfile->obfd; |
72bf9492 | 1755 | struct partial_die_info *pdi; |
c906108c | 1756 | |
91c24f0a DC |
1757 | /* Now, march along the PDI's, descending into ones which have |
1758 | interesting children but skipping the children of the other ones, | |
1759 | until we reach the end of the compilation unit. */ | |
c906108c | 1760 | |
72bf9492 | 1761 | pdi = first_die; |
91c24f0a | 1762 | |
72bf9492 DJ |
1763 | while (pdi != NULL) |
1764 | { | |
1765 | fixup_partial_die (pdi, cu); | |
c906108c | 1766 | |
91c24f0a DC |
1767 | /* Anonymous namespaces have no name but have interesting |
1768 | children, so we need to look at them. Ditto for anonymous | |
1769 | enums. */ | |
933c6fe4 | 1770 | |
72bf9492 DJ |
1771 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1772 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1773 | { |
72bf9492 | 1774 | switch (pdi->tag) |
c906108c SS |
1775 | { |
1776 | case DW_TAG_subprogram: | |
72bf9492 | 1777 | if (pdi->has_pc_info) |
c906108c | 1778 | { |
72bf9492 | 1779 | if (pdi->lowpc < *lowpc) |
c906108c | 1780 | { |
72bf9492 | 1781 | *lowpc = pdi->lowpc; |
c906108c | 1782 | } |
72bf9492 | 1783 | if (pdi->highpc > *highpc) |
c906108c | 1784 | { |
72bf9492 | 1785 | *highpc = pdi->highpc; |
c906108c | 1786 | } |
72bf9492 | 1787 | if (!pdi->is_declaration) |
c906108c | 1788 | { |
72bf9492 | 1789 | add_partial_symbol (pdi, cu); |
c906108c SS |
1790 | } |
1791 | } | |
1792 | break; | |
1793 | case DW_TAG_variable: | |
1794 | case DW_TAG_typedef: | |
91c24f0a | 1795 | case DW_TAG_union_type: |
72bf9492 | 1796 | if (!pdi->is_declaration) |
63d06c5c | 1797 | { |
72bf9492 | 1798 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1799 | } |
1800 | break; | |
c906108c | 1801 | case DW_TAG_class_type: |
680b30c7 | 1802 | case DW_TAG_interface_type: |
c906108c | 1803 | case DW_TAG_structure_type: |
72bf9492 | 1804 | if (!pdi->is_declaration) |
c906108c | 1805 | { |
72bf9492 | 1806 | add_partial_symbol (pdi, cu); |
c906108c SS |
1807 | } |
1808 | break; | |
91c24f0a | 1809 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1810 | if (!pdi->is_declaration) |
1811 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1812 | break; |
1813 | case DW_TAG_base_type: | |
a02abb62 | 1814 | case DW_TAG_subrange_type: |
c906108c | 1815 | /* File scope base type definitions are added to the partial |
c5aa993b | 1816 | symbol table. */ |
72bf9492 | 1817 | add_partial_symbol (pdi, cu); |
c906108c | 1818 | break; |
d9fa45fe | 1819 | case DW_TAG_namespace: |
72bf9492 | 1820 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1821 | break; |
c906108c SS |
1822 | default: |
1823 | break; | |
1824 | } | |
1825 | } | |
1826 | ||
72bf9492 DJ |
1827 | /* If the die has a sibling, skip to the sibling. */ |
1828 | ||
1829 | pdi = pdi->die_sibling; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1834 | |
72bf9492 | 1835 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1836 | name is concatenated with "::" and the partial DIE's name. For |
1837 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1838 | Enumerators are an exception; they use the scope of their parent |
1839 | enumeration type, i.e. the name of the enumeration type is not | |
1840 | prepended to the enumerator. | |
91c24f0a | 1841 | |
72bf9492 DJ |
1842 | There are two complexities. One is DW_AT_specification; in this |
1843 | case "parent" means the parent of the target of the specification, | |
1844 | instead of the direct parent of the DIE. The other is compilers | |
1845 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1846 | the fully qualified name of structure types from their members' | |
1847 | linkage names. This must be done using the DIE's children rather | |
1848 | than the children of any DW_AT_specification target. We only need | |
1849 | to do this for structures at the top level, i.e. if the target of | |
1850 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1851 | have a parent. */ | |
1852 | ||
1853 | /* Compute the scope prefix associated with PDI's parent, in | |
1854 | compilation unit CU. The result will be allocated on CU's | |
1855 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1856 | field. NULL is returned if no prefix is necessary. */ | |
1857 | static char * | |
1858 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1859 | struct dwarf2_cu *cu) | |
1860 | { | |
1861 | char *grandparent_scope; | |
1862 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1863 | |
72bf9492 DJ |
1864 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1865 | then this means the parent of the specification DIE. */ | |
1866 | ||
1867 | real_pdi = pdi; | |
72bf9492 | 1868 | while (real_pdi->has_specification) |
10b3939b | 1869 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1870 | |
1871 | parent = real_pdi->die_parent; | |
1872 | if (parent == NULL) | |
1873 | return NULL; | |
1874 | ||
1875 | if (parent->scope_set) | |
1876 | return parent->scope; | |
1877 | ||
1878 | fixup_partial_die (parent, cu); | |
1879 | ||
10b3939b | 1880 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1881 | |
1882 | if (parent->tag == DW_TAG_namespace | |
1883 | || parent->tag == DW_TAG_structure_type | |
1884 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 1885 | || parent->tag == DW_TAG_interface_type |
72bf9492 DJ |
1886 | || parent->tag == DW_TAG_union_type) |
1887 | { | |
1888 | if (grandparent_scope == NULL) | |
1889 | parent->scope = parent->name; | |
1890 | else | |
987504bb JJ |
1891 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1892 | parent->name, cu); | |
72bf9492 DJ |
1893 | } |
1894 | else if (parent->tag == DW_TAG_enumeration_type) | |
1895 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1896 | parent->scope = grandparent_scope; | |
1897 | else | |
1898 | { | |
1899 | /* FIXME drow/2004-04-01: What should we be doing with | |
1900 | function-local names? For partial symbols, we should probably be | |
1901 | ignoring them. */ | |
1902 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1903 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1904 | parent->tag, pdi->offset); |
1905 | parent->scope = grandparent_scope; | |
c906108c SS |
1906 | } |
1907 | ||
72bf9492 DJ |
1908 | parent->scope_set = 1; |
1909 | return parent->scope; | |
1910 | } | |
1911 | ||
1912 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1913 | CU. The result will be allocated with malloc. */ | |
1914 | static char * | |
1915 | partial_die_full_name (struct partial_die_info *pdi, | |
1916 | struct dwarf2_cu *cu) | |
1917 | { | |
1918 | char *parent_scope; | |
1919 | ||
1920 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1921 | if (parent_scope == NULL) | |
1922 | return NULL; | |
1923 | else | |
987504bb | 1924 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1925 | } |
1926 | ||
1927 | static void | |
72bf9492 | 1928 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1929 | { |
e7c27a73 | 1930 | struct objfile *objfile = cu->objfile; |
c906108c | 1931 | CORE_ADDR addr = 0; |
decbce07 | 1932 | char *actual_name = NULL; |
72bf9492 | 1933 | const char *my_prefix; |
5c4e30ca | 1934 | const struct partial_symbol *psym = NULL; |
e142c38c | 1935 | CORE_ADDR baseaddr; |
72bf9492 | 1936 | int built_actual_name = 0; |
e142c38c DJ |
1937 | |
1938 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1939 | |
72bf9492 | 1940 | if (pdi_needs_namespace (pdi->tag)) |
63d06c5c | 1941 | { |
72bf9492 DJ |
1942 | actual_name = partial_die_full_name (pdi, cu); |
1943 | if (actual_name) | |
1944 | built_actual_name = 1; | |
63d06c5c DC |
1945 | } |
1946 | ||
72bf9492 DJ |
1947 | if (actual_name == NULL) |
1948 | actual_name = pdi->name; | |
1949 | ||
c906108c SS |
1950 | switch (pdi->tag) |
1951 | { | |
1952 | case DW_TAG_subprogram: | |
2cfa0c8d | 1953 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 1954 | { |
2cfa0c8d JB |
1955 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
1956 | of the global scope. But in Ada, we want to be able to access | |
1957 | nested procedures globally. So all Ada subprograms are stored | |
1958 | in the global scope. */ | |
38d518c9 | 1959 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1960 | mst_text, objfile); */ |
38d518c9 | 1961 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1962 | VAR_DOMAIN, LOC_BLOCK, |
1963 | &objfile->global_psymbols, | |
1964 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1965 | cu->language, objfile); |
c906108c SS |
1966 | } |
1967 | else | |
1968 | { | |
38d518c9 | 1969 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1970 | mst_file_text, objfile); */ |
38d518c9 | 1971 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1972 | VAR_DOMAIN, LOC_BLOCK, |
1973 | &objfile->static_psymbols, | |
1974 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1975 | cu->language, objfile); |
c906108c SS |
1976 | } |
1977 | break; | |
1978 | case DW_TAG_variable: | |
1979 | if (pdi->is_external) | |
1980 | { | |
1981 | /* Global Variable. | |
1982 | Don't enter into the minimal symbol tables as there is | |
1983 | a minimal symbol table entry from the ELF symbols already. | |
1984 | Enter into partial symbol table if it has a location | |
1985 | descriptor or a type. | |
1986 | If the location descriptor is missing, new_symbol will create | |
1987 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1988 | be determined from the minimal symbol table whenever the variable | |
1989 | is referenced. | |
1990 | The address for the partial symbol table entry is not | |
1991 | used by GDB, but it comes in handy for debugging partial symbol | |
1992 | table building. */ | |
1993 | ||
1994 | if (pdi->locdesc) | |
e7c27a73 | 1995 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1996 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1997 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1998 | VAR_DOMAIN, LOC_STATIC, |
1999 | &objfile->global_psymbols, | |
2000 | 0, addr + baseaddr, | |
e142c38c | 2001 | cu->language, objfile); |
c906108c SS |
2002 | } |
2003 | else | |
2004 | { | |
2005 | /* Static Variable. Skip symbols without location descriptors. */ | |
2006 | if (pdi->locdesc == NULL) | |
decbce07 MS |
2007 | { |
2008 | if (built_actual_name) | |
2009 | xfree (actual_name); | |
2010 | return; | |
2011 | } | |
e7c27a73 | 2012 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 2013 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 2014 | mst_file_data, objfile); */ |
38d518c9 | 2015 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2016 | VAR_DOMAIN, LOC_STATIC, |
2017 | &objfile->static_psymbols, | |
2018 | 0, addr + baseaddr, | |
e142c38c | 2019 | cu->language, objfile); |
c906108c SS |
2020 | } |
2021 | break; | |
2022 | case DW_TAG_typedef: | |
2023 | case DW_TAG_base_type: | |
a02abb62 | 2024 | case DW_TAG_subrange_type: |
38d518c9 | 2025 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2026 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 2027 | &objfile->static_psymbols, |
e142c38c | 2028 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2029 | break; |
72bf9492 DJ |
2030 | case DW_TAG_namespace: |
2031 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
2032 | VAR_DOMAIN, LOC_TYPEDEF, | |
2033 | &objfile->global_psymbols, | |
2034 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
2035 | break; | |
c906108c | 2036 | case DW_TAG_class_type: |
680b30c7 | 2037 | case DW_TAG_interface_type: |
c906108c SS |
2038 | case DW_TAG_structure_type: |
2039 | case DW_TAG_union_type: | |
2040 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
2041 | /* Skip external references. The DWARF standard says in the section |
2042 | about "Structure, Union, and Class Type Entries": "An incomplete | |
2043 | structure, union or class type is represented by a structure, | |
2044 | union or class entry that does not have a byte size attribute | |
2045 | and that has a DW_AT_declaration attribute." */ | |
2046 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
2047 | { |
2048 | if (built_actual_name) | |
2049 | xfree (actual_name); | |
2050 | return; | |
2051 | } | |
fa4028e9 | 2052 | |
63d06c5c DC |
2053 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
2054 | static vs. global. */ | |
38d518c9 | 2055 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2056 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2057 | (cu->language == language_cplus |
2058 | || cu->language == language_java) | |
63d06c5c DC |
2059 | ? &objfile->global_psymbols |
2060 | : &objfile->static_psymbols, | |
e142c38c | 2061 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2062 | |
987504bb | 2063 | if (cu->language == language_cplus |
8c6860bb JB |
2064 | || cu->language == language_java |
2065 | || cu->language == language_ada) | |
c906108c | 2066 | { |
987504bb | 2067 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 2068 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2069 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 2070 | &objfile->global_psymbols, |
e142c38c | 2071 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2072 | } |
2073 | break; | |
2074 | case DW_TAG_enumerator: | |
38d518c9 | 2075 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2076 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2077 | (cu->language == language_cplus |
2078 | || cu->language == language_java) | |
f6fe98ef DJ |
2079 | ? &objfile->global_psymbols |
2080 | : &objfile->static_psymbols, | |
e142c38c | 2081 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2082 | break; |
2083 | default: | |
2084 | break; | |
2085 | } | |
5c4e30ca DC |
2086 | |
2087 | /* Check to see if we should scan the name for possible namespace | |
2088 | info. Only do this if this is C++, if we don't have namespace | |
2089 | debugging info in the file, if the psym is of an appropriate type | |
2090 | (otherwise we'll have psym == NULL), and if we actually had a | |
2091 | mangled name to begin with. */ | |
2092 | ||
72bf9492 DJ |
2093 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2094 | cases which do not set PSYM above? */ | |
2095 | ||
e142c38c | 2096 | if (cu->language == language_cplus |
72bf9492 | 2097 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2098 | && psym != NULL |
2099 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2100 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2101 | objfile); | |
72bf9492 DJ |
2102 | |
2103 | if (built_actual_name) | |
2104 | xfree (actual_name); | |
c906108c SS |
2105 | } |
2106 | ||
72bf9492 DJ |
2107 | /* Determine whether a die of type TAG living in a C++ class or |
2108 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2109 | name listed in the die. */ |
2110 | ||
2111 | static int | |
72bf9492 | 2112 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2113 | { |
63d06c5c DC |
2114 | switch (tag) |
2115 | { | |
72bf9492 | 2116 | case DW_TAG_namespace: |
63d06c5c DC |
2117 | case DW_TAG_typedef: |
2118 | case DW_TAG_class_type: | |
680b30c7 | 2119 | case DW_TAG_interface_type: |
63d06c5c DC |
2120 | case DW_TAG_structure_type: |
2121 | case DW_TAG_union_type: | |
2122 | case DW_TAG_enumeration_type: | |
2123 | case DW_TAG_enumerator: | |
2124 | return 1; | |
2125 | default: | |
2126 | return 0; | |
2127 | } | |
2128 | } | |
2129 | ||
5c4e30ca DC |
2130 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2131 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2132 | the name of the enclosing namespace. */ | |
91c24f0a | 2133 | |
72bf9492 DJ |
2134 | static void |
2135 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2136 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2137 | struct dwarf2_cu *cu) |
91c24f0a | 2138 | { |
e7c27a73 | 2139 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2140 | |
72bf9492 | 2141 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2142 | |
72bf9492 | 2143 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2144 | |
2145 | /* Now scan partial symbols in that namespace. */ | |
2146 | ||
91c24f0a | 2147 | if (pdi->has_children) |
72bf9492 | 2148 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2149 | } |
2150 | ||
72bf9492 DJ |
2151 | /* See if we can figure out if the class lives in a namespace. We do |
2152 | this by looking for a member function; its demangled name will | |
2153 | contain namespace info, if there is any. */ | |
63d06c5c | 2154 | |
72bf9492 DJ |
2155 | static void |
2156 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2157 | struct dwarf2_cu *cu) | |
63d06c5c | 2158 | { |
987504bb JJ |
2159 | if ((cu->language == language_cplus |
2160 | || cu->language == language_java) | |
72bf9492 | 2161 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2162 | && struct_pdi->has_children) |
2163 | { | |
63d06c5c DC |
2164 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2165 | what template types look like, because the demangler | |
2166 | frequently doesn't give the same name as the debug info. We | |
2167 | could fix this by only using the demangled name to get the | |
134d01f1 | 2168 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2169 | |
72bf9492 DJ |
2170 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2171 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2172 | |
72bf9492 DJ |
2173 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2174 | we should not do this. We'll prepend the parent's fully qualified | |
2175 | name when we create the partial symbol. */ | |
5d51ca54 | 2176 | |
72bf9492 | 2177 | real_pdi = struct_pdi; |
72bf9492 | 2178 | while (real_pdi->has_specification) |
10b3939b | 2179 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2180 | |
72bf9492 DJ |
2181 | if (real_pdi->die_parent != NULL) |
2182 | return; | |
63d06c5c | 2183 | |
72bf9492 DJ |
2184 | while (child_pdi != NULL) |
2185 | { | |
2186 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2187 | { |
72bf9492 | 2188 | char *actual_class_name |
31c27f77 JJ |
2189 | = language_class_name_from_physname (cu->language_defn, |
2190 | child_pdi->name); | |
63d06c5c | 2191 | if (actual_class_name != NULL) |
72bf9492 DJ |
2192 | { |
2193 | struct_pdi->name | |
2194 | = obsavestring (actual_class_name, | |
2195 | strlen (actual_class_name), | |
2196 | &cu->comp_unit_obstack); | |
2197 | xfree (actual_class_name); | |
2198 | } | |
63d06c5c DC |
2199 | break; |
2200 | } | |
72bf9492 DJ |
2201 | |
2202 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2203 | } |
2204 | } | |
63d06c5c DC |
2205 | } |
2206 | ||
91c24f0a DC |
2207 | /* Read a partial die corresponding to an enumeration type. */ |
2208 | ||
72bf9492 DJ |
2209 | static void |
2210 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2211 | struct dwarf2_cu *cu) | |
91c24f0a | 2212 | { |
e7c27a73 | 2213 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2214 | bfd *abfd = objfile->obfd; |
72bf9492 | 2215 | struct partial_die_info *pdi; |
91c24f0a DC |
2216 | |
2217 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2218 | add_partial_symbol (enum_pdi, cu); |
2219 | ||
2220 | pdi = enum_pdi->die_child; | |
2221 | while (pdi) | |
91c24f0a | 2222 | { |
72bf9492 | 2223 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2224 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2225 | else |
72bf9492 DJ |
2226 | add_partial_symbol (pdi, cu); |
2227 | pdi = pdi->die_sibling; | |
91c24f0a | 2228 | } |
91c24f0a DC |
2229 | } |
2230 | ||
4bb7a0a7 DJ |
2231 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2232 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2233 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2234 | the initial number. */ | |
2235 | ||
2236 | static struct abbrev_info * | |
fe1b8b76 | 2237 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2238 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2239 | { |
2240 | bfd *abfd = cu->objfile->obfd; | |
2241 | unsigned int abbrev_number; | |
2242 | struct abbrev_info *abbrev; | |
2243 | ||
2244 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2245 | ||
2246 | if (abbrev_number == 0) | |
2247 | return NULL; | |
2248 | ||
2249 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2250 | if (!abbrev) | |
2251 | { | |
8a3fe4f8 | 2252 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2253 | bfd_get_filename (abfd)); |
2254 | } | |
2255 | ||
2256 | return abbrev; | |
2257 | } | |
2258 | ||
2259 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2260 | pointer to the end of a series of DIEs, terminated by an empty | |
2261 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2262 | ||
fe1b8b76 JB |
2263 | static gdb_byte * |
2264 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2265 | { |
2266 | struct abbrev_info *abbrev; | |
2267 | unsigned int bytes_read; | |
2268 | ||
2269 | while (1) | |
2270 | { | |
2271 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2272 | if (abbrev == NULL) | |
2273 | return info_ptr + bytes_read; | |
2274 | else | |
2275 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2280 | should point just after the initial uleb128 of a DIE, and the | |
2281 | abbrev corresponding to that skipped uleb128 should be passed in | |
2282 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2283 | children. */ | |
2284 | ||
fe1b8b76 JB |
2285 | static gdb_byte * |
2286 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2287 | struct dwarf2_cu *cu) |
2288 | { | |
2289 | unsigned int bytes_read; | |
2290 | struct attribute attr; | |
2291 | bfd *abfd = cu->objfile->obfd; | |
2292 | unsigned int form, i; | |
2293 | ||
2294 | for (i = 0; i < abbrev->num_attrs; i++) | |
2295 | { | |
2296 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2297 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2298 | { | |
2299 | read_attribute (&attr, &abbrev->attrs[i], | |
2300 | abfd, info_ptr, cu); | |
2301 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2302 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2303 | else |
6502dd73 DJ |
2304 | return dwarf2_per_objfile->info_buffer |
2305 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2306 | } |
2307 | ||
2308 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2309 | form = abbrev->attrs[i].form; | |
2310 | skip_attribute: | |
2311 | switch (form) | |
2312 | { | |
2313 | case DW_FORM_addr: | |
2314 | case DW_FORM_ref_addr: | |
2315 | info_ptr += cu->header.addr_size; | |
2316 | break; | |
2317 | case DW_FORM_data1: | |
2318 | case DW_FORM_ref1: | |
2319 | case DW_FORM_flag: | |
2320 | info_ptr += 1; | |
2321 | break; | |
2322 | case DW_FORM_data2: | |
2323 | case DW_FORM_ref2: | |
2324 | info_ptr += 2; | |
2325 | break; | |
2326 | case DW_FORM_data4: | |
2327 | case DW_FORM_ref4: | |
2328 | info_ptr += 4; | |
2329 | break; | |
2330 | case DW_FORM_data8: | |
2331 | case DW_FORM_ref8: | |
2332 | info_ptr += 8; | |
2333 | break; | |
2334 | case DW_FORM_string: | |
2335 | read_string (abfd, info_ptr, &bytes_read); | |
2336 | info_ptr += bytes_read; | |
2337 | break; | |
2338 | case DW_FORM_strp: | |
2339 | info_ptr += cu->header.offset_size; | |
2340 | break; | |
2341 | case DW_FORM_block: | |
2342 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2343 | info_ptr += bytes_read; | |
2344 | break; | |
2345 | case DW_FORM_block1: | |
2346 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2347 | break; | |
2348 | case DW_FORM_block2: | |
2349 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2350 | break; | |
2351 | case DW_FORM_block4: | |
2352 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2353 | break; | |
2354 | case DW_FORM_sdata: | |
2355 | case DW_FORM_udata: | |
2356 | case DW_FORM_ref_udata: | |
2357 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2358 | break; | |
2359 | case DW_FORM_indirect: | |
2360 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2361 | info_ptr += bytes_read; | |
2362 | /* We need to continue parsing from here, so just go back to | |
2363 | the top. */ | |
2364 | goto skip_attribute; | |
2365 | ||
2366 | default: | |
8a3fe4f8 | 2367 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2368 | dwarf_form_name (form), |
2369 | bfd_get_filename (abfd)); | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | if (abbrev->has_children) | |
2374 | return skip_children (info_ptr, cu); | |
2375 | else | |
2376 | return info_ptr; | |
2377 | } | |
2378 | ||
2379 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2380 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2381 | |
fe1b8b76 JB |
2382 | static gdb_byte * |
2383 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2384 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2385 | { |
2386 | /* Do we know the sibling already? */ | |
72bf9492 | 2387 | |
91c24f0a DC |
2388 | if (orig_pdi->sibling) |
2389 | return orig_pdi->sibling; | |
2390 | ||
2391 | /* Are there any children to deal with? */ | |
2392 | ||
2393 | if (!orig_pdi->has_children) | |
2394 | return info_ptr; | |
2395 | ||
4bb7a0a7 | 2396 | /* Skip the children the long way. */ |
91c24f0a | 2397 | |
4bb7a0a7 | 2398 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2399 | } |
2400 | ||
c906108c SS |
2401 | /* Expand this partial symbol table into a full symbol table. */ |
2402 | ||
2403 | static void | |
fba45db2 | 2404 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2405 | { |
2406 | /* FIXME: This is barely more than a stub. */ | |
2407 | if (pst != NULL) | |
2408 | { | |
2409 | if (pst->readin) | |
2410 | { | |
8a3fe4f8 | 2411 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2412 | } |
2413 | else | |
2414 | { | |
2415 | if (info_verbose) | |
2416 | { | |
a3f17187 | 2417 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2418 | gdb_flush (gdb_stdout); |
2419 | } | |
2420 | ||
10b3939b DJ |
2421 | /* Restore our global data. */ |
2422 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2423 | dwarf2_objfile_data_key); | |
2424 | ||
c906108c SS |
2425 | psymtab_to_symtab_1 (pst); |
2426 | ||
2427 | /* Finish up the debug error message. */ | |
2428 | if (info_verbose) | |
a3f17187 | 2429 | printf_filtered (_("done.\n")); |
c906108c SS |
2430 | } |
2431 | } | |
2432 | } | |
2433 | ||
10b3939b DJ |
2434 | /* Add PER_CU to the queue. */ |
2435 | ||
2436 | static void | |
2437 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2438 | { | |
2439 | struct dwarf2_queue_item *item; | |
2440 | ||
2441 | per_cu->queued = 1; | |
2442 | item = xmalloc (sizeof (*item)); | |
2443 | item->per_cu = per_cu; | |
2444 | item->next = NULL; | |
2445 | ||
2446 | if (dwarf2_queue == NULL) | |
2447 | dwarf2_queue = item; | |
2448 | else | |
2449 | dwarf2_queue_tail->next = item; | |
2450 | ||
2451 | dwarf2_queue_tail = item; | |
2452 | } | |
2453 | ||
2454 | /* Process the queue. */ | |
2455 | ||
2456 | static void | |
2457 | process_queue (struct objfile *objfile) | |
2458 | { | |
2459 | struct dwarf2_queue_item *item, *next_item; | |
2460 | ||
2461 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2462 | and the DIEs of any other compilation units it requires, | |
2463 | transitively. */ | |
2464 | ||
2465 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2466 | { | |
2467 | /* Read in this compilation unit. This may add new items to | |
2468 | the end of the queue. */ | |
31ffec48 | 2469 | load_full_comp_unit (item->per_cu, objfile); |
10b3939b DJ |
2470 | |
2471 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2472 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2473 | ||
2474 | /* If this compilation unit has already had full symbols created, | |
2475 | reset the TYPE fields in each DIE. */ | |
31ffec48 | 2476 | if (item->per_cu->type_hash) |
10b3939b DJ |
2477 | reset_die_and_siblings_types (item->per_cu->cu->dies, |
2478 | item->per_cu->cu); | |
2479 | } | |
2480 | ||
2481 | /* Now everything left on the queue needs to be read in. Process | |
2482 | them, one at a time, removing from the queue as we finish. */ | |
2483 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2484 | { | |
31ffec48 | 2485 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2486 | process_full_comp_unit (item->per_cu); |
2487 | ||
2488 | item->per_cu->queued = 0; | |
2489 | next_item = item->next; | |
2490 | xfree (item); | |
2491 | } | |
2492 | ||
2493 | dwarf2_queue_tail = NULL; | |
2494 | } | |
2495 | ||
2496 | /* Free all allocated queue entries. This function only releases anything if | |
2497 | an error was thrown; if the queue was processed then it would have been | |
2498 | freed as we went along. */ | |
2499 | ||
2500 | static void | |
2501 | dwarf2_release_queue (void *dummy) | |
2502 | { | |
2503 | struct dwarf2_queue_item *item, *last; | |
2504 | ||
2505 | item = dwarf2_queue; | |
2506 | while (item) | |
2507 | { | |
2508 | /* Anything still marked queued is likely to be in an | |
2509 | inconsistent state, so discard it. */ | |
2510 | if (item->per_cu->queued) | |
2511 | { | |
2512 | if (item->per_cu->cu != NULL) | |
2513 | free_one_cached_comp_unit (item->per_cu->cu); | |
2514 | item->per_cu->queued = 0; | |
2515 | } | |
2516 | ||
2517 | last = item; | |
2518 | item = item->next; | |
2519 | xfree (last); | |
2520 | } | |
2521 | ||
2522 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2523 | } | |
2524 | ||
2525 | /* Read in full symbols for PST, and anything it depends on. */ | |
2526 | ||
c906108c | 2527 | static void |
fba45db2 | 2528 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2529 | { |
10b3939b | 2530 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2531 | struct cleanup *back_to; |
aaa75496 JB |
2532 | int i; |
2533 | ||
2534 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2535 | if (!pst->dependencies[i]->readin) | |
2536 | { | |
2537 | /* Inform about additional files that need to be read in. */ | |
2538 | if (info_verbose) | |
2539 | { | |
a3f17187 | 2540 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2541 | fputs_filtered (" ", gdb_stdout); |
2542 | wrap_here (""); | |
2543 | fputs_filtered ("and ", gdb_stdout); | |
2544 | wrap_here (""); | |
2545 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2546 | wrap_here (""); /* Flush output */ | |
2547 | gdb_flush (gdb_stdout); | |
2548 | } | |
2549 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2550 | } | |
2551 | ||
10b3939b DJ |
2552 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2553 | ||
2554 | if (per_cu == NULL) | |
aaa75496 JB |
2555 | { |
2556 | /* It's an include file, no symbols to read for it. | |
2557 | Everything is in the parent symtab. */ | |
2558 | pst->readin = 1; | |
2559 | return; | |
2560 | } | |
c906108c | 2561 | |
10b3939b DJ |
2562 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2563 | ||
2564 | queue_comp_unit (per_cu); | |
2565 | ||
2566 | process_queue (pst->objfile); | |
2567 | ||
2568 | /* Age the cache, releasing compilation units that have not | |
2569 | been used recently. */ | |
2570 | age_cached_comp_units (); | |
2571 | ||
2572 | do_cleanups (back_to); | |
2573 | } | |
2574 | ||
2575 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2576 | ||
2577 | static struct dwarf2_cu * | |
31ffec48 | 2578 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2579 | { |
31ffec48 | 2580 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2581 | struct dwarf2_cu *cu; |
2582 | unsigned long offset; | |
fe1b8b76 | 2583 | gdb_byte *info_ptr; |
10b3939b DJ |
2584 | struct cleanup *back_to, *free_cu_cleanup; |
2585 | struct attribute *attr; | |
2586 | CORE_ADDR baseaddr; | |
6502dd73 | 2587 | |
c906108c | 2588 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2589 | offset = per_cu->offset; |
6502dd73 DJ |
2590 | |
2591 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2592 | |
10b3939b DJ |
2593 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2594 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2595 | |
10b3939b DJ |
2596 | /* If an error occurs while loading, release our storage. */ |
2597 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2598 | |
31ffec48 | 2599 | cu->objfile = objfile; |
e7c27a73 | 2600 | |
c906108c | 2601 | /* read in the comp_unit header */ |
10b3939b | 2602 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2603 | |
2604 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2605 | dwarf2_read_abbrevs (abfd, cu); |
2606 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2607 | ||
2608 | cu->header.offset = offset; | |
c906108c | 2609 | |
10b3939b DJ |
2610 | cu->per_cu = per_cu; |
2611 | per_cu->cu = cu; | |
e142c38c | 2612 | |
10b3939b DJ |
2613 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2614 | obstack_init (&cu->comp_unit_obstack); | |
2615 | ||
2616 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2617 | ||
2618 | /* We try not to read any attributes in this function, because not | |
2619 | all objfiles needed for references have been loaded yet, and symbol | |
2620 | table processing isn't initialized. But we have to set the CU language, | |
2621 | or we won't be able to build types correctly. */ | |
2622 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2623 | if (attr) | |
2624 | set_cu_language (DW_UNSND (attr), cu); | |
2625 | else | |
2626 | set_cu_language (language_minimal, cu); | |
2627 | ||
2628 | do_cleanups (back_to); | |
e142c38c | 2629 | |
10b3939b DJ |
2630 | /* We've successfully allocated this compilation unit. Let our caller |
2631 | clean it up when finished with it. */ | |
2632 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2633 | |
10b3939b DJ |
2634 | return cu; |
2635 | } | |
2636 | ||
2637 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2638 | already been loaded into memory. */ | |
2639 | ||
2640 | static void | |
2641 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2642 | { | |
2643 | struct partial_symtab *pst = per_cu->psymtab; | |
2644 | struct dwarf2_cu *cu = per_cu->cu; | |
2645 | struct objfile *objfile = pst->objfile; | |
2646 | bfd *abfd = objfile->obfd; | |
2647 | CORE_ADDR lowpc, highpc; | |
2648 | struct symtab *symtab; | |
2649 | struct cleanup *back_to; | |
2650 | struct attribute *attr; | |
2651 | CORE_ADDR baseaddr; | |
2652 | ||
2653 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2654 | ||
2655 | /* We're in the global namespace. */ | |
2656 | processing_current_prefix = ""; | |
2657 | ||
2658 | buildsym_init (); | |
2659 | back_to = make_cleanup (really_free_pendings, NULL); | |
2660 | ||
2661 | cu->list_in_scope = &file_symbols; | |
c906108c | 2662 | |
0d53c4c4 DJ |
2663 | /* Find the base address of the compilation unit for range lists and |
2664 | location lists. It will normally be specified by DW_AT_low_pc. | |
2665 | In DWARF-3 draft 4, the base address could be overridden by | |
2666 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2667 | compilation units with discontinuous ranges. */ | |
2668 | ||
10b3939b DJ |
2669 | cu->header.base_known = 0; |
2670 | cu->header.base_address = 0; | |
0d53c4c4 | 2671 | |
10b3939b | 2672 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2673 | if (attr) |
2674 | { | |
10b3939b DJ |
2675 | cu->header.base_address = DW_ADDR (attr); |
2676 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2677 | } |
2678 | else | |
2679 | { | |
10b3939b | 2680 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2681 | if (attr) |
2682 | { | |
10b3939b DJ |
2683 | cu->header.base_address = DW_ADDR (attr); |
2684 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2685 | } |
2686 | } | |
2687 | ||
c906108c | 2688 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2689 | process_die (cu->dies, cu); |
c906108c | 2690 | |
fae299cd DC |
2691 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2692 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2693 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2694 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2695 | |
613e1657 | 2696 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2697 | |
2698 | /* Set symtab language to language from DW_AT_language. | |
2699 | If the compilation is from a C file generated by language preprocessors, | |
2700 | do not set the language if it was already deduced by start_subfile. */ | |
2701 | if (symtab != NULL | |
10b3939b | 2702 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2703 | { |
10b3939b | 2704 | symtab->language = cu->language; |
c906108c SS |
2705 | } |
2706 | pst->symtab = symtab; | |
2707 | pst->readin = 1; | |
c906108c SS |
2708 | |
2709 | do_cleanups (back_to); | |
2710 | } | |
2711 | ||
2712 | /* Process a die and its children. */ | |
2713 | ||
2714 | static void | |
e7c27a73 | 2715 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2716 | { |
2717 | switch (die->tag) | |
2718 | { | |
2719 | case DW_TAG_padding: | |
2720 | break; | |
2721 | case DW_TAG_compile_unit: | |
e7c27a73 | 2722 | read_file_scope (die, cu); |
c906108c SS |
2723 | break; |
2724 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2725 | read_subroutine_type (die, cu); |
2726 | read_func_scope (die, cu); | |
c906108c SS |
2727 | break; |
2728 | case DW_TAG_inlined_subroutine: | |
2729 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2730 | They could be used to set breakpoints on all inlined instances |
2731 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2732 | break; |
2733 | case DW_TAG_lexical_block: | |
14898363 L |
2734 | case DW_TAG_try_block: |
2735 | case DW_TAG_catch_block: | |
e7c27a73 | 2736 | read_lexical_block_scope (die, cu); |
c906108c SS |
2737 | break; |
2738 | case DW_TAG_class_type: | |
680b30c7 | 2739 | case DW_TAG_interface_type: |
c906108c SS |
2740 | case DW_TAG_structure_type: |
2741 | case DW_TAG_union_type: | |
134d01f1 DJ |
2742 | read_structure_type (die, cu); |
2743 | process_structure_scope (die, cu); | |
c906108c SS |
2744 | break; |
2745 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2746 | read_enumeration_type (die, cu); |
2747 | process_enumeration_scope (die, cu); | |
c906108c | 2748 | break; |
134d01f1 DJ |
2749 | |
2750 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2751 | a symbol or process any children. Therefore it doesn't do anything | |
2752 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2753 | case DW_TAG_subroutine_type: |
e7c27a73 | 2754 | read_subroutine_type (die, cu); |
c906108c | 2755 | break; |
72019c9c GM |
2756 | case DW_TAG_set_type: |
2757 | read_set_type (die, cu); | |
2758 | break; | |
c906108c | 2759 | case DW_TAG_array_type: |
e7c27a73 | 2760 | read_array_type (die, cu); |
c906108c SS |
2761 | break; |
2762 | case DW_TAG_pointer_type: | |
e7c27a73 | 2763 | read_tag_pointer_type (die, cu); |
c906108c SS |
2764 | break; |
2765 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2766 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2767 | break; |
2768 | case DW_TAG_reference_type: | |
e7c27a73 | 2769 | read_tag_reference_type (die, cu); |
c906108c SS |
2770 | break; |
2771 | case DW_TAG_string_type: | |
e7c27a73 | 2772 | read_tag_string_type (die, cu); |
c906108c | 2773 | break; |
134d01f1 DJ |
2774 | /* END FIXME */ |
2775 | ||
c906108c | 2776 | case DW_TAG_base_type: |
e7c27a73 | 2777 | read_base_type (die, cu); |
134d01f1 DJ |
2778 | /* Add a typedef symbol for the type definition, if it has a |
2779 | DW_AT_name. */ | |
2780 | new_symbol (die, die->type, cu); | |
c906108c | 2781 | break; |
a02abb62 JB |
2782 | case DW_TAG_subrange_type: |
2783 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2784 | /* Add a typedef symbol for the type definition, if it has a |
2785 | DW_AT_name. */ | |
2786 | new_symbol (die, die->type, cu); | |
a02abb62 | 2787 | break; |
c906108c | 2788 | case DW_TAG_common_block: |
e7c27a73 | 2789 | read_common_block (die, cu); |
c906108c SS |
2790 | break; |
2791 | case DW_TAG_common_inclusion: | |
2792 | break; | |
d9fa45fe | 2793 | case DW_TAG_namespace: |
63d06c5c | 2794 | processing_has_namespace_info = 1; |
e7c27a73 | 2795 | read_namespace (die, cu); |
d9fa45fe DC |
2796 | break; |
2797 | case DW_TAG_imported_declaration: | |
2798 | case DW_TAG_imported_module: | |
2799 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2800 | information contained in these. DW_TAG_imported_declaration | |
2801 | dies shouldn't have children; DW_TAG_imported_module dies | |
2802 | shouldn't in the C++ case, but conceivably could in the | |
2803 | Fortran case, so we'll have to replace this gdb_assert if | |
2804 | Fortran compilers start generating that info. */ | |
63d06c5c | 2805 | processing_has_namespace_info = 1; |
639d11d3 | 2806 | gdb_assert (die->child == NULL); |
d9fa45fe | 2807 | break; |
c906108c | 2808 | default: |
e7c27a73 | 2809 | new_symbol (die, NULL, cu); |
c906108c SS |
2810 | break; |
2811 | } | |
2812 | } | |
2813 | ||
5fb290d7 | 2814 | static void |
e142c38c | 2815 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2816 | { |
e142c38c | 2817 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2818 | } |
2819 | ||
cb1df416 DJ |
2820 | static void |
2821 | free_cu_line_header (void *arg) | |
2822 | { | |
2823 | struct dwarf2_cu *cu = arg; | |
2824 | ||
2825 | free_line_header (cu->line_header); | |
2826 | cu->line_header = NULL; | |
2827 | } | |
2828 | ||
c906108c | 2829 | static void |
e7c27a73 | 2830 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2831 | { |
e7c27a73 DJ |
2832 | struct objfile *objfile = cu->objfile; |
2833 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2834 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2835 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2836 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2837 | struct attribute *attr; | |
e1024ff1 | 2838 | char *name = NULL; |
c906108c SS |
2839 | char *comp_dir = NULL; |
2840 | struct die_info *child_die; | |
2841 | bfd *abfd = objfile->obfd; | |
debd256d | 2842 | struct line_header *line_header = 0; |
e142c38c DJ |
2843 | CORE_ADDR baseaddr; |
2844 | ||
2845 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2846 | |
fae299cd | 2847 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2848 | |
2849 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2850 | from finish_block. */ | |
2acceee2 | 2851 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2852 | lowpc = highpc; |
2853 | lowpc += baseaddr; | |
2854 | highpc += baseaddr; | |
2855 | ||
39cbfefa DJ |
2856 | /* Find the filename. Do not use dwarf2_name here, since the filename |
2857 | is not a source language identifier. */ | |
e142c38c | 2858 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2859 | if (attr) |
2860 | { | |
2861 | name = DW_STRING (attr); | |
2862 | } | |
e1024ff1 | 2863 | |
e142c38c | 2864 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 2865 | if (attr) |
e1024ff1 DJ |
2866 | comp_dir = DW_STRING (attr); |
2867 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 2868 | { |
e1024ff1 DJ |
2869 | comp_dir = ldirname (name); |
2870 | if (comp_dir != NULL) | |
2871 | make_cleanup (xfree, comp_dir); | |
2872 | } | |
2873 | if (comp_dir != NULL) | |
2874 | { | |
2875 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2876 | directory, get rid of it. */ | |
2877 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 2878 | |
e1024ff1 DJ |
2879 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
2880 | comp_dir = cp + 1; | |
c906108c SS |
2881 | } |
2882 | ||
e1024ff1 DJ |
2883 | if (name == NULL) |
2884 | name = "<unknown>"; | |
2885 | ||
e142c38c | 2886 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2887 | if (attr) |
2888 | { | |
e142c38c | 2889 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2890 | } |
2891 | ||
b0f35d58 DL |
2892 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2893 | if (attr) | |
2894 | cu->producer = DW_STRING (attr); | |
303b6f5d | 2895 | |
c906108c SS |
2896 | /* We assume that we're processing GCC output. */ |
2897 | processing_gcc_compilation = 2; | |
c906108c | 2898 | |
c906108c SS |
2899 | start_symtab (name, comp_dir, lowpc); |
2900 | record_debugformat ("DWARF 2"); | |
303b6f5d | 2901 | record_producer (cu->producer); |
c906108c | 2902 | |
e142c38c | 2903 | initialize_cu_func_list (cu); |
c906108c | 2904 | |
cb1df416 DJ |
2905 | /* Decode line number information if present. We do this before |
2906 | processing child DIEs, so that the line header table is available | |
2907 | for DW_AT_decl_file. */ | |
e142c38c | 2908 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2909 | if (attr) |
2910 | { | |
debd256d | 2911 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2912 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2913 | if (line_header) |
2914 | { | |
cb1df416 DJ |
2915 | cu->line_header = line_header; |
2916 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 2917 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2918 | } |
5fb290d7 | 2919 | } |
debd256d | 2920 | |
cb1df416 DJ |
2921 | /* Process all dies in compilation unit. */ |
2922 | if (die->child != NULL) | |
2923 | { | |
2924 | child_die = die->child; | |
2925 | while (child_die && child_die->tag) | |
2926 | { | |
2927 | process_die (child_die, cu); | |
2928 | child_die = sibling_die (child_die); | |
2929 | } | |
2930 | } | |
2931 | ||
2e276125 JB |
2932 | /* Decode macro information, if present. Dwarf 2 macro information |
2933 | refers to information in the line number info statement program | |
2934 | header, so we can only read it if we've read the header | |
2935 | successfully. */ | |
e142c38c | 2936 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2937 | if (attr && line_header) |
2e276125 JB |
2938 | { |
2939 | unsigned int macro_offset = DW_UNSND (attr); | |
2940 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2941 | comp_dir, abfd, cu); |
2e276125 | 2942 | } |
debd256d | 2943 | do_cleanups (back_to); |
5fb290d7 DJ |
2944 | } |
2945 | ||
2946 | static void | |
e142c38c DJ |
2947 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2948 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2949 | { |
2950 | struct function_range *thisfn; | |
2951 | ||
2952 | thisfn = (struct function_range *) | |
7b5a2f43 | 2953 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2954 | thisfn->name = name; |
2955 | thisfn->lowpc = lowpc; | |
2956 | thisfn->highpc = highpc; | |
2957 | thisfn->seen_line = 0; | |
2958 | thisfn->next = NULL; | |
2959 | ||
e142c38c DJ |
2960 | if (cu->last_fn == NULL) |
2961 | cu->first_fn = thisfn; | |
5fb290d7 | 2962 | else |
e142c38c | 2963 | cu->last_fn->next = thisfn; |
5fb290d7 | 2964 | |
e142c38c | 2965 | cu->last_fn = thisfn; |
c906108c SS |
2966 | } |
2967 | ||
2968 | static void | |
e7c27a73 | 2969 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2970 | { |
e7c27a73 | 2971 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2972 | struct context_stack *new; |
c906108c SS |
2973 | CORE_ADDR lowpc; |
2974 | CORE_ADDR highpc; | |
2975 | struct die_info *child_die; | |
2976 | struct attribute *attr; | |
2977 | char *name; | |
fdde2d81 DC |
2978 | const char *previous_prefix = processing_current_prefix; |
2979 | struct cleanup *back_to = NULL; | |
e142c38c | 2980 | CORE_ADDR baseaddr; |
801e3a5b | 2981 | struct block *block; |
c906108c | 2982 | |
e142c38c DJ |
2983 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2984 | ||
2985 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2986 | |
2987 | /* Ignore functions with missing or empty names and functions with | |
2988 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2989 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2990 | return; |
2991 | ||
987504bb JJ |
2992 | if (cu->language == language_cplus |
2993 | || cu->language == language_java) | |
fdde2d81 | 2994 | { |
086ed43d | 2995 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2996 | |
2a35147e JB |
2997 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2998 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2999 | given the code | |
3000 | ||
3001 | namespace N { | |
3002 | void foo() { | |
3003 | // Definition of N::foo. | |
3004 | } | |
3005 | } | |
3006 | ||
3007 | then we'll have a tree of DIEs like this: | |
3008 | ||
3009 | 1: DW_TAG_compile_unit | |
3010 | 2: DW_TAG_namespace // N | |
3011 | 3: DW_TAG_subprogram // declaration of N::foo | |
3012 | 4: DW_TAG_subprogram // definition of N::foo | |
3013 | DW_AT_specification // refers to die #3 | |
3014 | ||
3015 | Thus, when processing die #4, we have to pretend that we're | |
3016 | in the context of its DW_AT_specification, namely the contex | |
3017 | of die #3. */ | |
fdde2d81 DC |
3018 | |
3019 | if (spec_die != NULL) | |
3020 | { | |
e142c38c | 3021 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
3022 | processing_current_prefix = specification_prefix; |
3023 | back_to = make_cleanup (xfree, specification_prefix); | |
3024 | } | |
3025 | } | |
3026 | ||
c906108c SS |
3027 | lowpc += baseaddr; |
3028 | highpc += baseaddr; | |
3029 | ||
5fb290d7 | 3030 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 3031 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 3032 | |
c906108c | 3033 | new = push_context (0, lowpc); |
e7c27a73 | 3034 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 3035 | |
4cecd739 DJ |
3036 | /* If there is a location expression for DW_AT_frame_base, record |
3037 | it. */ | |
e142c38c | 3038 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 3039 | if (attr) |
c034e007 AC |
3040 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
3041 | expression is being recorded directly in the function's symbol | |
3042 | and not in a separate frame-base object. I guess this hack is | |
3043 | to avoid adding some sort of frame-base adjunct/annex to the | |
3044 | function's symbol :-(. The problem with doing this is that it | |
3045 | results in a function symbol with a location expression that | |
3046 | has nothing to do with the location of the function, ouch! The | |
3047 | relationship should be: a function's symbol has-a frame base; a | |
3048 | frame-base has-a location expression. */ | |
e7c27a73 | 3049 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 3050 | |
e142c38c | 3051 | cu->list_in_scope = &local_symbols; |
c906108c | 3052 | |
639d11d3 | 3053 | if (die->child != NULL) |
c906108c | 3054 | { |
639d11d3 | 3055 | child_die = die->child; |
c906108c SS |
3056 | while (child_die && child_die->tag) |
3057 | { | |
e7c27a73 | 3058 | process_die (child_die, cu); |
c906108c SS |
3059 | child_die = sibling_die (child_die); |
3060 | } | |
3061 | } | |
3062 | ||
3063 | new = pop_context (); | |
3064 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3065 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3066 | lowpc, highpc, objfile); | |
3067 | ||
3068 | /* If we have address ranges, record them. */ | |
3069 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3070 | |
3071 | /* In C++, we can have functions nested inside functions (e.g., when | |
3072 | a function declares a class that has methods). This means that | |
3073 | when we finish processing a function scope, we may need to go | |
3074 | back to building a containing block's symbol lists. */ | |
3075 | local_symbols = new->locals; | |
3076 | param_symbols = new->params; | |
3077 | ||
921e78cf JB |
3078 | /* If we've finished processing a top-level function, subsequent |
3079 | symbols go in the file symbol list. */ | |
3080 | if (outermost_context_p ()) | |
e142c38c | 3081 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
3082 | |
3083 | processing_current_prefix = previous_prefix; | |
3084 | if (back_to != NULL) | |
3085 | do_cleanups (back_to); | |
c906108c SS |
3086 | } |
3087 | ||
3088 | /* Process all the DIES contained within a lexical block scope. Start | |
3089 | a new scope, process the dies, and then close the scope. */ | |
3090 | ||
3091 | static void | |
e7c27a73 | 3092 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3093 | { |
e7c27a73 | 3094 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3095 | struct context_stack *new; |
c906108c SS |
3096 | CORE_ADDR lowpc, highpc; |
3097 | struct die_info *child_die; | |
e142c38c DJ |
3098 | CORE_ADDR baseaddr; |
3099 | ||
3100 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3101 | |
3102 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3103 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3104 | as multiple lexical blocks? Handling children in a sane way would | |
3105 | be nasty. Might be easier to properly extend generic blocks to | |
3106 | describe ranges. */ | |
e7c27a73 | 3107 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3108 | return; |
3109 | lowpc += baseaddr; | |
3110 | highpc += baseaddr; | |
3111 | ||
3112 | push_context (0, lowpc); | |
639d11d3 | 3113 | if (die->child != NULL) |
c906108c | 3114 | { |
639d11d3 | 3115 | child_die = die->child; |
c906108c SS |
3116 | while (child_die && child_die->tag) |
3117 | { | |
e7c27a73 | 3118 | process_die (child_die, cu); |
c906108c SS |
3119 | child_die = sibling_die (child_die); |
3120 | } | |
3121 | } | |
3122 | new = pop_context (); | |
3123 | ||
3124 | if (local_symbols != NULL) | |
3125 | { | |
801e3a5b JB |
3126 | struct block *block |
3127 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3128 | highpc, objfile); | |
3129 | ||
3130 | /* Note that recording ranges after traversing children, as we | |
3131 | do here, means that recording a parent's ranges entails | |
3132 | walking across all its children's ranges as they appear in | |
3133 | the address map, which is quadratic behavior. | |
3134 | ||
3135 | It would be nicer to record the parent's ranges before | |
3136 | traversing its children, simply overriding whatever you find | |
3137 | there. But since we don't even decide whether to create a | |
3138 | block until after we've traversed its children, that's hard | |
3139 | to do. */ | |
3140 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
3141 | } |
3142 | local_symbols = new->locals; | |
3143 | } | |
3144 | ||
43039443 JK |
3145 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
3146 | Return 1 if the attributes are present and valid, otherwise, return 0. */ | |
3147 | ||
3148 | static int | |
3149 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
3150 | CORE_ADDR *high_return, struct dwarf2_cu *cu) | |
3151 | { | |
3152 | struct objfile *objfile = cu->objfile; | |
3153 | struct comp_unit_head *cu_header = &cu->header; | |
3154 | bfd *obfd = objfile->obfd; | |
3155 | unsigned int addr_size = cu_header->addr_size; | |
3156 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3157 | /* Base address selection entry. */ | |
3158 | CORE_ADDR base; | |
3159 | int found_base; | |
3160 | unsigned int dummy; | |
3161 | gdb_byte *buffer; | |
3162 | CORE_ADDR marker; | |
3163 | int low_set; | |
3164 | CORE_ADDR low = 0; | |
3165 | CORE_ADDR high = 0; | |
3166 | ||
3167 | found_base = cu_header->base_known; | |
3168 | base = cu_header->base_address; | |
3169 | ||
3170 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3171 | { | |
3172 | complaint (&symfile_complaints, | |
3173 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
3174 | offset); | |
3175 | return 0; | |
3176 | } | |
3177 | buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3178 | ||
3179 | /* Read in the largest possible address. */ | |
3180 | marker = read_address (obfd, buffer, cu, &dummy); | |
3181 | if ((marker & mask) == mask) | |
3182 | { | |
3183 | /* If we found the largest possible address, then | |
3184 | read the base address. */ | |
3185 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3186 | buffer += 2 * addr_size; | |
3187 | offset += 2 * addr_size; | |
3188 | found_base = 1; | |
3189 | } | |
3190 | ||
3191 | low_set = 0; | |
3192 | ||
3193 | while (1) | |
3194 | { | |
3195 | CORE_ADDR range_beginning, range_end; | |
3196 | ||
3197 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
3198 | buffer += addr_size; | |
3199 | range_end = read_address (obfd, buffer, cu, &dummy); | |
3200 | buffer += addr_size; | |
3201 | offset += 2 * addr_size; | |
3202 | ||
3203 | /* An end of list marker is a pair of zero addresses. */ | |
3204 | if (range_beginning == 0 && range_end == 0) | |
3205 | /* Found the end of list entry. */ | |
3206 | break; | |
3207 | ||
3208 | /* Each base address selection entry is a pair of 2 values. | |
3209 | The first is the largest possible address, the second is | |
3210 | the base address. Check for a base address here. */ | |
3211 | if ((range_beginning & mask) == mask) | |
3212 | { | |
3213 | /* If we found the largest possible address, then | |
3214 | read the base address. */ | |
3215 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3216 | found_base = 1; | |
3217 | continue; | |
3218 | } | |
3219 | ||
3220 | if (!found_base) | |
3221 | { | |
3222 | /* We have no valid base address for the ranges | |
3223 | data. */ | |
3224 | complaint (&symfile_complaints, | |
3225 | _("Invalid .debug_ranges data (no base address)")); | |
3226 | return 0; | |
3227 | } | |
3228 | ||
3229 | range_beginning += base; | |
3230 | range_end += base; | |
3231 | ||
3232 | /* FIXME: This is recording everything as a low-high | |
3233 | segment of consecutive addresses. We should have a | |
3234 | data structure for discontiguous block ranges | |
3235 | instead. */ | |
3236 | if (! low_set) | |
3237 | { | |
3238 | low = range_beginning; | |
3239 | high = range_end; | |
3240 | low_set = 1; | |
3241 | } | |
3242 | else | |
3243 | { | |
3244 | if (range_beginning < low) | |
3245 | low = range_beginning; | |
3246 | if (range_end > high) | |
3247 | high = range_end; | |
3248 | } | |
3249 | } | |
3250 | ||
3251 | if (! low_set) | |
3252 | /* If the first entry is an end-of-list marker, the range | |
3253 | describes an empty scope, i.e. no instructions. */ | |
3254 | return 0; | |
3255 | ||
3256 | if (low_return) | |
3257 | *low_return = low; | |
3258 | if (high_return) | |
3259 | *high_return = high; | |
3260 | return 1; | |
3261 | } | |
3262 | ||
af34e669 DJ |
3263 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3264 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3265 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3266 | static int |
af34e669 | 3267 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3268 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c SS |
3269 | { |
3270 | struct attribute *attr; | |
af34e669 DJ |
3271 | CORE_ADDR low = 0; |
3272 | CORE_ADDR high = 0; | |
3273 | int ret = 0; | |
c906108c | 3274 | |
e142c38c | 3275 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3276 | if (attr) |
af34e669 DJ |
3277 | { |
3278 | high = DW_ADDR (attr); | |
e142c38c | 3279 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3280 | if (attr) |
3281 | low = DW_ADDR (attr); | |
3282 | else | |
3283 | /* Found high w/o low attribute. */ | |
3284 | return 0; | |
3285 | ||
3286 | /* Found consecutive range of addresses. */ | |
3287 | ret = 1; | |
3288 | } | |
c906108c | 3289 | else |
af34e669 | 3290 | { |
e142c38c | 3291 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3292 | if (attr != NULL) |
3293 | { | |
af34e669 | 3294 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 3295 | .debug_ranges section. */ |
43039443 | 3296 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu)) |
af34e669 | 3297 | return 0; |
43039443 | 3298 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
3299 | ret = -1; |
3300 | } | |
3301 | } | |
c906108c SS |
3302 | |
3303 | if (high < low) | |
3304 | return 0; | |
3305 | ||
3306 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3307 | eliminate duplicate copies of functions and vtables and such. | |
3308 | The linker will arbitrarily choose one and discard the others. | |
3309 | The AT_*_pc values for such functions refer to local labels in | |
3310 | these sections. If the section from that file was discarded, the | |
3311 | labels are not in the output, so the relocs get a value of 0. | |
3312 | If this is a discarded function, mark the pc bounds as invalid, | |
3313 | so that GDB will ignore it. */ | |
72dca2f5 | 3314 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3315 | return 0; |
3316 | ||
3317 | *lowpc = low; | |
3318 | *highpc = high; | |
af34e669 | 3319 | return ret; |
c906108c SS |
3320 | } |
3321 | ||
fae299cd DC |
3322 | /* Get the low and high pc's represented by the scope DIE, and store |
3323 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3324 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3325 | ||
3326 | static void | |
3327 | get_scope_pc_bounds (struct die_info *die, | |
3328 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3329 | struct dwarf2_cu *cu) | |
3330 | { | |
3331 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3332 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3333 | CORE_ADDR current_low, current_high; | |
3334 | ||
3335 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3336 | { | |
3337 | best_low = current_low; | |
3338 | best_high = current_high; | |
3339 | } | |
3340 | else | |
3341 | { | |
3342 | struct die_info *child = die->child; | |
3343 | ||
3344 | while (child && child->tag) | |
3345 | { | |
3346 | switch (child->tag) { | |
3347 | case DW_TAG_subprogram: | |
3348 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3349 | { | |
3350 | best_low = min (best_low, current_low); | |
3351 | best_high = max (best_high, current_high); | |
3352 | } | |
3353 | break; | |
3354 | case DW_TAG_namespace: | |
3355 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3356 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3357 | that current GCC's always emit the DIEs corresponding | |
3358 | to definitions of methods of classes as children of a | |
3359 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3360 | the DIEs giving the declarations, which could be | |
3361 | anywhere). But I don't see any reason why the | |
3362 | standards says that they have to be there. */ | |
3363 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3364 | ||
3365 | if (current_low != ((CORE_ADDR) -1)) | |
3366 | { | |
3367 | best_low = min (best_low, current_low); | |
3368 | best_high = max (best_high, current_high); | |
3369 | } | |
3370 | break; | |
3371 | default: | |
3372 | /* Ignore. */ | |
3373 | break; | |
3374 | } | |
3375 | ||
3376 | child = sibling_die (child); | |
3377 | } | |
3378 | } | |
3379 | ||
3380 | *lowpc = best_low; | |
3381 | *highpc = best_high; | |
3382 | } | |
3383 | ||
801e3a5b JB |
3384 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
3385 | in DIE. */ | |
3386 | static void | |
3387 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
3388 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
3389 | { | |
3390 | struct attribute *attr; | |
3391 | ||
3392 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
3393 | if (attr) | |
3394 | { | |
3395 | CORE_ADDR high = DW_ADDR (attr); | |
3396 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3397 | if (attr) | |
3398 | { | |
3399 | CORE_ADDR low = DW_ADDR (attr); | |
3400 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
3401 | } | |
3402 | } | |
3403 | ||
3404 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
3405 | if (attr) | |
3406 | { | |
3407 | bfd *obfd = cu->objfile->obfd; | |
3408 | ||
3409 | /* The value of the DW_AT_ranges attribute is the offset of the | |
3410 | address range list in the .debug_ranges section. */ | |
3411 | unsigned long offset = DW_UNSND (attr); | |
3412 | gdb_byte *buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3413 | ||
3414 | /* For some target architectures, but not others, the | |
3415 | read_address function sign-extends the addresses it returns. | |
3416 | To recognize base address selection entries, we need a | |
3417 | mask. */ | |
3418 | unsigned int addr_size = cu->header.addr_size; | |
3419 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3420 | ||
3421 | /* The base address, to which the next pair is relative. Note | |
3422 | that this 'base' is a DWARF concept: most entries in a range | |
3423 | list are relative, to reduce the number of relocs against the | |
3424 | debugging information. This is separate from this function's | |
3425 | 'baseaddr' argument, which GDB uses to relocate debugging | |
3426 | information from a shared library based on the address at | |
3427 | which the library was loaded. */ | |
3428 | CORE_ADDR base = cu->header.base_address; | |
3429 | int base_known = cu->header.base_known; | |
3430 | ||
3431 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3432 | { | |
3433 | complaint (&symfile_complaints, | |
3434 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
3435 | offset); | |
3436 | return; | |
3437 | } | |
3438 | ||
3439 | for (;;) | |
3440 | { | |
3441 | unsigned int bytes_read; | |
3442 | CORE_ADDR start, end; | |
3443 | ||
3444 | start = read_address (obfd, buffer, cu, &bytes_read); | |
3445 | buffer += bytes_read; | |
3446 | end = read_address (obfd, buffer, cu, &bytes_read); | |
3447 | buffer += bytes_read; | |
3448 | ||
3449 | /* Did we find the end of the range list? */ | |
3450 | if (start == 0 && end == 0) | |
3451 | break; | |
3452 | ||
3453 | /* Did we find a base address selection entry? */ | |
3454 | else if ((start & base_select_mask) == base_select_mask) | |
3455 | { | |
3456 | base = end; | |
3457 | base_known = 1; | |
3458 | } | |
3459 | ||
3460 | /* We found an ordinary address range. */ | |
3461 | else | |
3462 | { | |
3463 | if (!base_known) | |
3464 | { | |
3465 | complaint (&symfile_complaints, | |
3466 | _("Invalid .debug_ranges data (no base address)")); | |
3467 | return; | |
3468 | } | |
3469 | ||
3470 | record_block_range (block, | |
3471 | baseaddr + base + start, | |
3472 | baseaddr + base + end - 1); | |
3473 | } | |
3474 | } | |
3475 | } | |
3476 | } | |
3477 | ||
c906108c SS |
3478 | /* Add an aggregate field to the field list. */ |
3479 | ||
3480 | static void | |
107d2387 | 3481 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3482 | struct dwarf2_cu *cu) |
3483 | { | |
3484 | struct objfile *objfile = cu->objfile; | |
5e2b427d | 3485 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
3486 | struct nextfield *new_field; |
3487 | struct attribute *attr; | |
3488 | struct field *fp; | |
3489 | char *fieldname = ""; | |
3490 | ||
3491 | /* Allocate a new field list entry and link it in. */ | |
3492 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3493 | make_cleanup (xfree, new_field); |
c906108c SS |
3494 | memset (new_field, 0, sizeof (struct nextfield)); |
3495 | new_field->next = fip->fields; | |
3496 | fip->fields = new_field; | |
3497 | fip->nfields++; | |
3498 | ||
3499 | /* Handle accessibility and virtuality of field. | |
3500 | The default accessibility for members is public, the default | |
3501 | accessibility for inheritance is private. */ | |
3502 | if (die->tag != DW_TAG_inheritance) | |
3503 | new_field->accessibility = DW_ACCESS_public; | |
3504 | else | |
3505 | new_field->accessibility = DW_ACCESS_private; | |
3506 | new_field->virtuality = DW_VIRTUALITY_none; | |
3507 | ||
e142c38c | 3508 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3509 | if (attr) |
3510 | new_field->accessibility = DW_UNSND (attr); | |
3511 | if (new_field->accessibility != DW_ACCESS_public) | |
3512 | fip->non_public_fields = 1; | |
e142c38c | 3513 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3514 | if (attr) |
3515 | new_field->virtuality = DW_UNSND (attr); | |
3516 | ||
3517 | fp = &new_field->field; | |
a9a9bd0f | 3518 | |
e142c38c | 3519 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3520 | { |
a9a9bd0f DC |
3521 | /* Data member other than a C++ static data member. */ |
3522 | ||
c906108c | 3523 | /* Get type of field. */ |
e7c27a73 | 3524 | fp->type = die_type (die, cu); |
c906108c | 3525 | |
01ad7f36 DJ |
3526 | FIELD_STATIC_KIND (*fp) = 0; |
3527 | ||
c906108c | 3528 | /* Get bit size of field (zero if none). */ |
e142c38c | 3529 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3530 | if (attr) |
3531 | { | |
3532 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3533 | } | |
3534 | else | |
3535 | { | |
3536 | FIELD_BITSIZE (*fp) = 0; | |
3537 | } | |
3538 | ||
3539 | /* Get bit offset of field. */ | |
e142c38c | 3540 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3541 | if (attr) |
3542 | { | |
c6a0999f JB |
3543 | int byte_offset; |
3544 | ||
3690dd37 JB |
3545 | if (attr_form_is_section_offset (attr)) |
3546 | { | |
3547 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 3548 | byte_offset = 0; |
3690dd37 JB |
3549 | } |
3550 | else if (attr_form_is_constant (attr)) | |
c6a0999f | 3551 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
3690dd37 | 3552 | else |
c6a0999f JB |
3553 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
3554 | ||
3555 | FIELD_BITPOS (*fp) = byte_offset * bits_per_byte; | |
c906108c SS |
3556 | } |
3557 | else | |
3558 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3559 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3560 | if (attr) |
3561 | { | |
5e2b427d | 3562 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
3563 | { |
3564 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3565 | additional bit offset from the MSB of the containing |
3566 | anonymous object to the MSB of the field. We don't | |
3567 | have to do anything special since we don't need to | |
3568 | know the size of the anonymous object. */ | |
c906108c SS |
3569 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3570 | } | |
3571 | else | |
3572 | { | |
3573 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3574 | MSB of the anonymous object, subtract off the number of |
3575 | bits from the MSB of the field to the MSB of the | |
3576 | object, and then subtract off the number of bits of | |
3577 | the field itself. The result is the bit offset of | |
3578 | the LSB of the field. */ | |
c906108c SS |
3579 | int anonymous_size; |
3580 | int bit_offset = DW_UNSND (attr); | |
3581 | ||
e142c38c | 3582 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3583 | if (attr) |
3584 | { | |
3585 | /* The size of the anonymous object containing | |
3586 | the bit field is explicit, so use the | |
3587 | indicated size (in bytes). */ | |
3588 | anonymous_size = DW_UNSND (attr); | |
3589 | } | |
3590 | else | |
3591 | { | |
3592 | /* The size of the anonymous object containing | |
3593 | the bit field must be inferred from the type | |
3594 | attribute of the data member containing the | |
3595 | bit field. */ | |
3596 | anonymous_size = TYPE_LENGTH (fp->type); | |
3597 | } | |
3598 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3599 | - bit_offset - FIELD_BITSIZE (*fp); | |
3600 | } | |
3601 | } | |
3602 | ||
3603 | /* Get name of field. */ | |
39cbfefa DJ |
3604 | fieldname = dwarf2_name (die, cu); |
3605 | if (fieldname == NULL) | |
3606 | fieldname = ""; | |
d8151005 DJ |
3607 | |
3608 | /* The name is already allocated along with this objfile, so we don't | |
3609 | need to duplicate it for the type. */ | |
3610 | fp->name = fieldname; | |
c906108c SS |
3611 | |
3612 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3613 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3614 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3615 | { |
3616 | new_field->accessibility = DW_ACCESS_private; | |
3617 | fip->non_public_fields = 1; | |
3618 | } | |
3619 | } | |
a9a9bd0f | 3620 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3621 | { |
a9a9bd0f DC |
3622 | /* C++ static member. */ |
3623 | ||
3624 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3625 | is a declaration, but all versions of G++ as of this writing | |
3626 | (so through at least 3.2.1) incorrectly generate | |
3627 | DW_TAG_variable tags. */ | |
3628 | ||
c906108c | 3629 | char *physname; |
c906108c | 3630 | |
a9a9bd0f | 3631 | /* Get name of field. */ |
39cbfefa DJ |
3632 | fieldname = dwarf2_name (die, cu); |
3633 | if (fieldname == NULL) | |
c906108c SS |
3634 | return; |
3635 | ||
2df3850c | 3636 | /* Get physical name. */ |
e142c38c | 3637 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3638 | |
d8151005 DJ |
3639 | /* The name is already allocated along with this objfile, so we don't |
3640 | need to duplicate it for the type. */ | |
3641 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3642 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3643 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3644 | } |
3645 | else if (die->tag == DW_TAG_inheritance) | |
3646 | { | |
3647 | /* C++ base class field. */ | |
e142c38c | 3648 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3649 | if (attr) |
e7c27a73 | 3650 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3651 | * bits_per_byte); |
c906108c | 3652 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3653 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3654 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3655 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3656 | fip->nbaseclasses++; | |
3657 | } | |
3658 | } | |
3659 | ||
3660 | /* Create the vector of fields, and attach it to the type. */ | |
3661 | ||
3662 | static void | |
fba45db2 | 3663 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3664 | struct dwarf2_cu *cu) |
c906108c SS |
3665 | { |
3666 | int nfields = fip->nfields; | |
3667 | ||
3668 | /* Record the field count, allocate space for the array of fields, | |
3669 | and create blank accessibility bitfields if necessary. */ | |
3670 | TYPE_NFIELDS (type) = nfields; | |
3671 | TYPE_FIELDS (type) = (struct field *) | |
3672 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3673 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3674 | ||
3675 | if (fip->non_public_fields) | |
3676 | { | |
3677 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3678 | ||
3679 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3680 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3681 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3682 | ||
3683 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3684 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3685 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3686 | ||
3687 | TYPE_FIELD_IGNORE_BITS (type) = | |
3688 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3689 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3690 | } | |
3691 | ||
3692 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3693 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3694 | if (fip->nbaseclasses) | |
3695 | { | |
3696 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3697 | unsigned char *pointer; |
c906108c SS |
3698 | |
3699 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3700 | pointer = TYPE_ALLOC (type, num_bytes); |
3701 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3702 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3703 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3704 | } | |
3705 | ||
3706 | /* Copy the saved-up fields into the field vector. Start from the head | |
3707 | of the list, adding to the tail of the field array, so that they end | |
3708 | up in the same order in the array in which they were added to the list. */ | |
3709 | while (nfields-- > 0) | |
3710 | { | |
3711 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3712 | switch (fip->fields->accessibility) | |
3713 | { | |
c5aa993b JM |
3714 | case DW_ACCESS_private: |
3715 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3716 | break; | |
c906108c | 3717 | |
c5aa993b JM |
3718 | case DW_ACCESS_protected: |
3719 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3720 | break; | |
c906108c | 3721 | |
c5aa993b JM |
3722 | case DW_ACCESS_public: |
3723 | break; | |
c906108c | 3724 | |
c5aa993b JM |
3725 | default: |
3726 | /* Unknown accessibility. Complain and treat it as public. */ | |
3727 | { | |
e2e0b3e5 | 3728 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3729 | fip->fields->accessibility); |
c5aa993b JM |
3730 | } |
3731 | break; | |
c906108c SS |
3732 | } |
3733 | if (nfields < fip->nbaseclasses) | |
3734 | { | |
3735 | switch (fip->fields->virtuality) | |
3736 | { | |
c5aa993b JM |
3737 | case DW_VIRTUALITY_virtual: |
3738 | case DW_VIRTUALITY_pure_virtual: | |
3739 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3740 | break; | |
c906108c SS |
3741 | } |
3742 | } | |
3743 | fip->fields = fip->fields->next; | |
3744 | } | |
3745 | } | |
3746 | ||
c906108c SS |
3747 | /* Add a member function to the proper fieldlist. */ |
3748 | ||
3749 | static void | |
107d2387 | 3750 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3751 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3752 | { |
e7c27a73 | 3753 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3754 | struct attribute *attr; |
3755 | struct fnfieldlist *flp; | |
3756 | int i; | |
3757 | struct fn_field *fnp; | |
3758 | char *fieldname; | |
3759 | char *physname; | |
3760 | struct nextfnfield *new_fnfield; | |
3761 | ||
2df3850c | 3762 | /* Get name of member function. */ |
39cbfefa DJ |
3763 | fieldname = dwarf2_name (die, cu); |
3764 | if (fieldname == NULL) | |
2df3850c | 3765 | return; |
c906108c | 3766 | |
2df3850c | 3767 | /* Get the mangled name. */ |
e142c38c | 3768 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3769 | |
3770 | /* Look up member function name in fieldlist. */ | |
3771 | for (i = 0; i < fip->nfnfields; i++) | |
3772 | { | |
27bfe10e | 3773 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3774 | break; |
3775 | } | |
3776 | ||
3777 | /* Create new list element if necessary. */ | |
3778 | if (i < fip->nfnfields) | |
3779 | flp = &fip->fnfieldlists[i]; | |
3780 | else | |
3781 | { | |
3782 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3783 | { | |
3784 | fip->fnfieldlists = (struct fnfieldlist *) | |
3785 | xrealloc (fip->fnfieldlists, | |
3786 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3787 | * sizeof (struct fnfieldlist)); |
c906108c | 3788 | if (fip->nfnfields == 0) |
c13c43fd | 3789 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3790 | } |
3791 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3792 | flp->name = fieldname; | |
3793 | flp->length = 0; | |
3794 | flp->head = NULL; | |
3795 | fip->nfnfields++; | |
3796 | } | |
3797 | ||
3798 | /* Create a new member function field and chain it to the field list | |
3799 | entry. */ | |
3800 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3801 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3802 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3803 | new_fnfield->next = flp->head; | |
3804 | flp->head = new_fnfield; | |
3805 | flp->length++; | |
3806 | ||
3807 | /* Fill in the member function field info. */ | |
3808 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3809 | /* The name is already allocated along with this objfile, so we don't |
3810 | need to duplicate it for the type. */ | |
3811 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3812 | fnp->type = alloc_type (objfile); |
3813 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3814 | { | |
c906108c | 3815 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3816 | |
e26fb1d7 DC |
3817 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3818 | of the method itself (TYPE_CODE_METHOD). */ | |
3819 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3820 | TYPE_TARGET_TYPE (die->type), |
3821 | TYPE_FIELDS (die->type), | |
3822 | TYPE_NFIELDS (die->type), | |
3823 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3824 | |
3825 | /* Handle static member functions. | |
c5aa993b JM |
3826 | Dwarf2 has no clean way to discern C++ static and non-static |
3827 | member functions. G++ helps GDB by marking the first | |
3828 | parameter for non-static member functions (which is the | |
3829 | this pointer) as artificial. We obtain this information | |
3830 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3831 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3832 | fnp->voffset = VOFFSET_STATIC; | |
3833 | } | |
3834 | else | |
e2e0b3e5 | 3835 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3836 | physname); |
c906108c SS |
3837 | |
3838 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3839 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3840 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3841 | |
3842 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3843 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3844 | ||
3845 | /* Get accessibility. */ | |
e142c38c | 3846 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3847 | if (attr) |
3848 | { | |
3849 | switch (DW_UNSND (attr)) | |
3850 | { | |
c5aa993b JM |
3851 | case DW_ACCESS_private: |
3852 | fnp->is_private = 1; | |
3853 | break; | |
3854 | case DW_ACCESS_protected: | |
3855 | fnp->is_protected = 1; | |
3856 | break; | |
c906108c SS |
3857 | } |
3858 | } | |
3859 | ||
b02dede2 | 3860 | /* Check for artificial methods. */ |
e142c38c | 3861 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3862 | if (attr && DW_UNSND (attr) != 0) |
3863 | fnp->is_artificial = 1; | |
3864 | ||
c906108c | 3865 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3866 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3867 | if (attr) |
8e19ed76 PS |
3868 | { |
3869 | /* Support the .debug_loc offsets */ | |
3870 | if (attr_form_is_block (attr)) | |
3871 | { | |
e7c27a73 | 3872 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 3873 | } |
3690dd37 | 3874 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 3875 | { |
4d3c2250 | 3876 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3877 | } |
3878 | else | |
3879 | { | |
4d3c2250 KB |
3880 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3881 | fieldname); | |
8e19ed76 PS |
3882 | } |
3883 | } | |
c906108c SS |
3884 | } |
3885 | ||
3886 | /* Create the vector of member function fields, and attach it to the type. */ | |
3887 | ||
3888 | static void | |
fba45db2 | 3889 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3890 | struct dwarf2_cu *cu) |
c906108c SS |
3891 | { |
3892 | struct fnfieldlist *flp; | |
3893 | int total_length = 0; | |
3894 | int i; | |
3895 | ||
3896 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3897 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3898 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3899 | ||
3900 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3901 | { | |
3902 | struct nextfnfield *nfp = flp->head; | |
3903 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3904 | int k; | |
3905 | ||
3906 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3907 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3908 | fn_flp->fn_fields = (struct fn_field *) | |
3909 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3910 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3911 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3912 | |
3913 | total_length += flp->length; | |
3914 | } | |
3915 | ||
3916 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3917 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3918 | } | |
3919 | ||
1168df01 JB |
3920 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
3921 | language, zero otherwise. */ | |
3922 | static int | |
3923 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3924 | { | |
3925 | static const char vptr[] = "_vptr"; | |
987504bb | 3926 | static const char vtable[] = "vtable"; |
1168df01 | 3927 | |
987504bb JJ |
3928 | /* Look for the C++ and Java forms of the vtable. */ |
3929 | if ((cu->language == language_java | |
3930 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3931 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3932 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3933 | return 1; |
3934 | ||
3935 | return 0; | |
3936 | } | |
3937 | ||
c0dd20ea DJ |
3938 | /* GCC outputs unnamed structures that are really pointers to member |
3939 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
3940 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
3941 | zero. |
3942 | ||
3943 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
3944 | This is GCC PR debug/28767. */ | |
c0dd20ea DJ |
3945 | |
3946 | static int | |
3947 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) | |
3948 | { | |
3949 | struct objfile *objfile = cu->objfile; | |
3950 | struct type *type; | |
3951 | struct die_info *pfn_die, *delta_die; | |
3952 | struct attribute *pfn_name, *delta_name; | |
3953 | struct type *pfn_type, *domain_type; | |
3954 | ||
3955 | /* Check for a structure with no name and two children. */ | |
3956 | if (die->tag != DW_TAG_structure_type | |
3957 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
3958 | || die->child == NULL | |
3959 | || die->child->sibling == NULL | |
3960 | || (die->child->sibling->sibling != NULL | |
3961 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
3962 | return 0; | |
3963 | ||
3964 | /* Check for __pfn and __delta members. */ | |
3965 | pfn_die = die->child; | |
3966 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
3967 | if (pfn_die->tag != DW_TAG_member | |
3968 | || pfn_name == NULL | |
3969 | || DW_STRING (pfn_name) == NULL | |
3970 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
3971 | return 0; | |
3972 | ||
3973 | delta_die = pfn_die->sibling; | |
3974 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
3975 | if (delta_die->tag != DW_TAG_member | |
3976 | || delta_name == NULL | |
3977 | || DW_STRING (delta_name) == NULL | |
3978 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
3979 | return 0; | |
3980 | ||
3981 | /* Find the type of the method. */ | |
3982 | pfn_type = die_type (pfn_die, cu); | |
3983 | if (pfn_type == NULL | |
3984 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
3985 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
3986 | return 0; | |
3987 | ||
3988 | /* Look for the "this" argument. */ | |
3989 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
3990 | if (TYPE_NFIELDS (pfn_type) == 0 | |
3991 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
3992 | return 0; | |
3993 | ||
3994 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
3995 | type = alloc_type (objfile); | |
3996 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
3997 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
3998 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 3999 | type = lookup_methodptr_type (type); |
c0dd20ea DJ |
4000 | set_die_type (die, type, cu); |
4001 | ||
4002 | return 1; | |
4003 | } | |
1168df01 | 4004 | |
c906108c SS |
4005 | /* Called when we find the DIE that starts a structure or union scope |
4006 | (definition) to process all dies that define the members of the | |
4007 | structure or union. | |
4008 | ||
4009 | NOTE: we need to call struct_type regardless of whether or not the | |
4010 | DIE has an at_name attribute, since it might be an anonymous | |
4011 | structure or union. This gets the type entered into our set of | |
4012 | user defined types. | |
4013 | ||
4014 | However, if the structure is incomplete (an opaque struct/union) | |
4015 | then suppress creating a symbol table entry for it since gdb only | |
4016 | wants to find the one with the complete definition. Note that if | |
4017 | it is complete, we just call new_symbol, which does it's own | |
4018 | checking about whether the struct/union is anonymous or not (and | |
4019 | suppresses creating a symbol table entry itself). */ | |
4020 | ||
4021 | static void | |
134d01f1 | 4022 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4023 | { |
e7c27a73 | 4024 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4025 | struct type *type; |
4026 | struct attribute *attr; | |
63d06c5c DC |
4027 | const char *previous_prefix = processing_current_prefix; |
4028 | struct cleanup *back_to = NULL; | |
39cbfefa | 4029 | char *name; |
c906108c | 4030 | |
134d01f1 DJ |
4031 | if (die->type) |
4032 | return; | |
4033 | ||
c0dd20ea DJ |
4034 | if (quirk_gcc_member_function_pointer (die, cu)) |
4035 | return; | |
c906108c | 4036 | |
c0dd20ea | 4037 | type = alloc_type (objfile); |
c906108c | 4038 | INIT_CPLUS_SPECIFIC (type); |
39cbfefa DJ |
4039 | name = dwarf2_name (die, cu); |
4040 | if (name != NULL) | |
c906108c | 4041 | { |
987504bb JJ |
4042 | if (cu->language == language_cplus |
4043 | || cu->language == language_java) | |
63d06c5c | 4044 | { |
8176b9b8 DC |
4045 | char *new_prefix = determine_class_name (die, cu); |
4046 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
4047 | strlen (new_prefix), | |
4048 | &objfile->objfile_obstack); | |
4049 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
4050 | processing_current_prefix = new_prefix; |
4051 | } | |
4052 | else | |
4053 | { | |
d8151005 DJ |
4054 | /* The name is already allocated along with this objfile, so |
4055 | we don't need to duplicate it for the type. */ | |
39cbfefa | 4056 | TYPE_TAG_NAME (type) = name; |
63d06c5c | 4057 | } |
c906108c SS |
4058 | } |
4059 | ||
4060 | if (die->tag == DW_TAG_structure_type) | |
4061 | { | |
4062 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
4063 | } | |
4064 | else if (die->tag == DW_TAG_union_type) | |
4065 | { | |
4066 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
4067 | } | |
4068 | else | |
4069 | { | |
4070 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 4071 | in gdbtypes.h. */ |
c906108c SS |
4072 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
4073 | } | |
4074 | ||
e142c38c | 4075 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4076 | if (attr) |
4077 | { | |
4078 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4079 | } | |
4080 | else | |
4081 | { | |
4082 | TYPE_LENGTH (type) = 0; | |
4083 | } | |
4084 | ||
d77b6808 | 4085 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB_SUPPORTED; |
dc718098 JB |
4086 | if (die_is_declaration (die, cu)) |
4087 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
4088 | ||
c906108c SS |
4089 | /* We need to add the type field to the die immediately so we don't |
4090 | infinitely recurse when dealing with pointers to the structure | |
4091 | type within the structure itself. */ | |
1c379e20 | 4092 | set_die_type (die, type, cu); |
c906108c | 4093 | |
e142c38c | 4094 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
4095 | { |
4096 | struct field_info fi; | |
4097 | struct die_info *child_die; | |
4098 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
4099 | ||
4100 | memset (&fi, 0, sizeof (struct field_info)); | |
4101 | ||
639d11d3 | 4102 | child_die = die->child; |
c906108c SS |
4103 | |
4104 | while (child_die && child_die->tag) | |
4105 | { | |
a9a9bd0f DC |
4106 | if (child_die->tag == DW_TAG_member |
4107 | || child_die->tag == DW_TAG_variable) | |
c906108c | 4108 | { |
a9a9bd0f DC |
4109 | /* NOTE: carlton/2002-11-05: A C++ static data member |
4110 | should be a DW_TAG_member that is a declaration, but | |
4111 | all versions of G++ as of this writing (so through at | |
4112 | least 3.2.1) incorrectly generate DW_TAG_variable | |
4113 | tags for them instead. */ | |
e7c27a73 | 4114 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4115 | } |
8713b1b1 | 4116 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
4117 | { |
4118 | /* C++ member function. */ | |
134d01f1 | 4119 | read_type_die (child_die, cu); |
e7c27a73 | 4120 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
4121 | } |
4122 | else if (child_die->tag == DW_TAG_inheritance) | |
4123 | { | |
4124 | /* C++ base class field. */ | |
e7c27a73 | 4125 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4126 | } |
c906108c SS |
4127 | child_die = sibling_die (child_die); |
4128 | } | |
4129 | ||
4130 | /* Attach fields and member functions to the type. */ | |
4131 | if (fi.nfields) | |
e7c27a73 | 4132 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
4133 | if (fi.nfnfields) |
4134 | { | |
e7c27a73 | 4135 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 4136 | |
c5aa993b | 4137 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
4138 | class itself) which contains the vtable pointer for the current |
4139 | class from the DW_AT_containing_type attribute. */ | |
4140 | ||
e142c38c | 4141 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 4142 | { |
e7c27a73 | 4143 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
4144 | |
4145 | TYPE_VPTR_BASETYPE (type) = t; | |
4146 | if (type == t) | |
4147 | { | |
c906108c SS |
4148 | int i; |
4149 | ||
4150 | /* Our own class provides vtbl ptr. */ | |
4151 | for (i = TYPE_NFIELDS (t) - 1; | |
4152 | i >= TYPE_N_BASECLASSES (t); | |
4153 | --i) | |
4154 | { | |
4155 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
4156 | ||
1168df01 | 4157 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
4158 | { |
4159 | TYPE_VPTR_FIELDNO (type) = i; | |
4160 | break; | |
4161 | } | |
4162 | } | |
4163 | ||
4164 | /* Complain if virtual function table field not found. */ | |
4165 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 4166 | complaint (&symfile_complaints, |
e2e0b3e5 | 4167 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
4168 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
4169 | ""); | |
c906108c SS |
4170 | } |
4171 | else | |
4172 | { | |
4173 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
4174 | } | |
4175 | } | |
f6235d4c EZ |
4176 | else if (cu->producer |
4177 | && strncmp (cu->producer, | |
4178 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
4179 | { | |
4180 | /* The IBM XLC compiler does not provide direct indication | |
4181 | of the containing type, but the vtable pointer is | |
4182 | always named __vfp. */ | |
4183 | ||
4184 | int i; | |
4185 | ||
4186 | for (i = TYPE_NFIELDS (type) - 1; | |
4187 | i >= TYPE_N_BASECLASSES (type); | |
4188 | --i) | |
4189 | { | |
4190 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
4191 | { | |
4192 | TYPE_VPTR_FIELDNO (type) = i; | |
4193 | TYPE_VPTR_BASETYPE (type) = type; | |
4194 | break; | |
4195 | } | |
4196 | } | |
4197 | } | |
c906108c SS |
4198 | } |
4199 | ||
c906108c SS |
4200 | do_cleanups (back_to); |
4201 | } | |
63d06c5c DC |
4202 | |
4203 | processing_current_prefix = previous_prefix; | |
4204 | if (back_to != NULL) | |
4205 | do_cleanups (back_to); | |
c906108c SS |
4206 | } |
4207 | ||
134d01f1 DJ |
4208 | static void |
4209 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4210 | { | |
4211 | struct objfile *objfile = cu->objfile; | |
4212 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 4213 | struct die_info *child_die = die->child; |
c906108c | 4214 | |
134d01f1 DJ |
4215 | if (TYPE_TAG_NAME (die->type) != NULL) |
4216 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 4217 | |
90aeadfc DC |
4218 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4219 | snapshots) has been known to create a die giving a declaration | |
4220 | for a class that has, as a child, a die giving a definition for a | |
4221 | nested class. So we have to process our children even if the | |
4222 | current die is a declaration. Normally, of course, a declaration | |
4223 | won't have any children at all. */ | |
134d01f1 | 4224 | |
90aeadfc DC |
4225 | while (child_die != NULL && child_die->tag) |
4226 | { | |
4227 | if (child_die->tag == DW_TAG_member | |
4228 | || child_die->tag == DW_TAG_variable | |
4229 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4230 | { |
90aeadfc | 4231 | /* Do nothing. */ |
134d01f1 | 4232 | } |
90aeadfc DC |
4233 | else |
4234 | process_die (child_die, cu); | |
134d01f1 | 4235 | |
90aeadfc | 4236 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4237 | } |
4238 | ||
fa4028e9 JB |
4239 | /* Do not consider external references. According to the DWARF standard, |
4240 | these DIEs are identified by the fact that they have no byte_size | |
4241 | attribute, and a declaration attribute. */ | |
4242 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4243 | || !die_is_declaration (die, cu)) | |
90aeadfc DC |
4244 | new_symbol (die, die->type, cu); |
4245 | ||
134d01f1 DJ |
4246 | processing_current_prefix = previous_prefix; |
4247 | } | |
4248 | ||
4249 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4250 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
4251 | |
4252 | static void | |
134d01f1 | 4253 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4254 | { |
e7c27a73 | 4255 | struct objfile *objfile = cu->objfile; |
c906108c | 4256 | struct type *type; |
c906108c | 4257 | struct attribute *attr; |
39cbfefa | 4258 | char *name; |
134d01f1 DJ |
4259 | |
4260 | if (die->type) | |
4261 | return; | |
c906108c SS |
4262 | |
4263 | type = alloc_type (objfile); | |
4264 | ||
4265 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
39cbfefa DJ |
4266 | name = dwarf2_name (die, cu); |
4267 | if (name != NULL) | |
c906108c | 4268 | { |
63d06c5c DC |
4269 | if (processing_has_namespace_info) |
4270 | { | |
987504bb JJ |
4271 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
4272 | processing_current_prefix, | |
4273 | name, cu); | |
63d06c5c DC |
4274 | } |
4275 | else | |
4276 | { | |
d8151005 DJ |
4277 | /* The name is already allocated along with this objfile, so |
4278 | we don't need to duplicate it for the type. */ | |
4279 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 4280 | } |
c906108c SS |
4281 | } |
4282 | ||
e142c38c | 4283 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4284 | if (attr) |
4285 | { | |
4286 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4287 | } | |
4288 | else | |
4289 | { | |
4290 | TYPE_LENGTH (type) = 0; | |
4291 | } | |
4292 | ||
137033e9 JB |
4293 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
4294 | declared as private in the package spec, and then defined only | |
4295 | inside the package body. Such types are known as Taft Amendment | |
4296 | Types. When another package uses such a type, an incomplete DIE | |
4297 | may be generated by the compiler. */ | |
02eb380e JB |
4298 | if (die_is_declaration (die, cu)) |
4299 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
4300 | ||
1c379e20 | 4301 | set_die_type (die, type, cu); |
134d01f1 DJ |
4302 | } |
4303 | ||
8176b9b8 | 4304 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 4305 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
4306 | is responsible for xfree()'ing it. */ |
4307 | ||
4308 | static char * | |
4309 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
4310 | { | |
4311 | struct cleanup *back_to = NULL; | |
4312 | struct die_info *spec_die = die_specification (die, cu); | |
4313 | char *new_prefix = NULL; | |
4314 | ||
4315 | /* If this is the definition of a class that is declared by another | |
4316 | die, then processing_current_prefix may not be accurate; see | |
4317 | read_func_scope for a similar example. */ | |
4318 | if (spec_die != NULL) | |
4319 | { | |
4320 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4321 | processing_current_prefix = specification_prefix; | |
4322 | back_to = make_cleanup (xfree, specification_prefix); | |
4323 | } | |
4324 | ||
4325 | /* If we don't have namespace debug info, guess the name by trying | |
4326 | to demangle the names of members, just like we did in | |
72bf9492 | 4327 | guess_structure_name. */ |
8176b9b8 DC |
4328 | if (!processing_has_namespace_info) |
4329 | { | |
4330 | struct die_info *child; | |
4331 | ||
4332 | for (child = die->child; | |
4333 | child != NULL && child->tag != 0; | |
4334 | child = sibling_die (child)) | |
4335 | { | |
4336 | if (child->tag == DW_TAG_subprogram) | |
4337 | { | |
31c27f77 JJ |
4338 | new_prefix |
4339 | = language_class_name_from_physname (cu->language_defn, | |
4340 | dwarf2_linkage_name | |
8176b9b8 DC |
4341 | (child, cu)); |
4342 | ||
4343 | if (new_prefix != NULL) | |
4344 | break; | |
4345 | } | |
4346 | } | |
4347 | } | |
4348 | ||
4349 | if (new_prefix == NULL) | |
4350 | { | |
4351 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4352 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4353 | name ? name : "<<anonymous>>", | |
4354 | cu); | |
8176b9b8 DC |
4355 | } |
4356 | ||
4357 | if (back_to != NULL) | |
4358 | do_cleanups (back_to); | |
4359 | ||
4360 | return new_prefix; | |
4361 | } | |
4362 | ||
134d01f1 DJ |
4363 | /* Given a pointer to a die which begins an enumeration, process all |
4364 | the dies that define the members of the enumeration, and create the | |
4365 | symbol for the enumeration type. | |
4366 | ||
4367 | NOTE: We reverse the order of the element list. */ | |
4368 | ||
4369 | static void | |
4370 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4371 | { | |
4372 | struct objfile *objfile = cu->objfile; | |
4373 | struct die_info *child_die; | |
4374 | struct field *fields; | |
134d01f1 DJ |
4375 | struct symbol *sym; |
4376 | int num_fields; | |
4377 | int unsigned_enum = 1; | |
39cbfefa | 4378 | char *name; |
134d01f1 | 4379 | |
c906108c SS |
4380 | num_fields = 0; |
4381 | fields = NULL; | |
639d11d3 | 4382 | if (die->child != NULL) |
c906108c | 4383 | { |
639d11d3 | 4384 | child_die = die->child; |
c906108c SS |
4385 | while (child_die && child_die->tag) |
4386 | { | |
4387 | if (child_die->tag != DW_TAG_enumerator) | |
4388 | { | |
e7c27a73 | 4389 | process_die (child_die, cu); |
c906108c SS |
4390 | } |
4391 | else | |
4392 | { | |
39cbfefa DJ |
4393 | name = dwarf2_name (child_die, cu); |
4394 | if (name) | |
c906108c | 4395 | { |
134d01f1 | 4396 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4397 | if (SYMBOL_VALUE (sym) < 0) |
4398 | unsigned_enum = 0; | |
4399 | ||
4400 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4401 | { | |
4402 | fields = (struct field *) | |
4403 | xrealloc (fields, | |
4404 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4405 | * sizeof (struct field)); |
c906108c SS |
4406 | } |
4407 | ||
22abf04a | 4408 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4409 | FIELD_TYPE (fields[num_fields]) = NULL; |
4410 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4411 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4412 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4413 | |
4414 | num_fields++; | |
4415 | } | |
4416 | } | |
4417 | ||
4418 | child_die = sibling_die (child_die); | |
4419 | } | |
4420 | ||
4421 | if (num_fields) | |
4422 | { | |
134d01f1 DJ |
4423 | TYPE_NFIELDS (die->type) = num_fields; |
4424 | TYPE_FIELDS (die->type) = (struct field *) | |
4425 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4426 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4427 | sizeof (struct field) * num_fields); |
b8c9b27d | 4428 | xfree (fields); |
c906108c SS |
4429 | } |
4430 | if (unsigned_enum) | |
134d01f1 | 4431 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4432 | } |
134d01f1 DJ |
4433 | |
4434 | new_symbol (die, die->type, cu); | |
c906108c SS |
4435 | } |
4436 | ||
4437 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4438 | the DIE's type field. For now, this only handles one dimensional | |
4439 | arrays. */ | |
4440 | ||
4441 | static void | |
e7c27a73 | 4442 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4443 | { |
e7c27a73 | 4444 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4445 | struct die_info *child_die; |
4446 | struct type *type = NULL; | |
4447 | struct type *element_type, *range_type, *index_type; | |
4448 | struct type **range_types = NULL; | |
4449 | struct attribute *attr; | |
4450 | int ndim = 0; | |
4451 | struct cleanup *back_to; | |
39cbfefa | 4452 | char *name; |
c906108c SS |
4453 | |
4454 | /* Return if we've already decoded this type. */ | |
4455 | if (die->type) | |
4456 | { | |
4457 | return; | |
4458 | } | |
4459 | ||
e7c27a73 | 4460 | element_type = die_type (die, cu); |
c906108c SS |
4461 | |
4462 | /* Irix 6.2 native cc creates array types without children for | |
4463 | arrays with unspecified length. */ | |
639d11d3 | 4464 | if (die->child == NULL) |
c906108c | 4465 | { |
6ccb9162 | 4466 | index_type = builtin_type_int32; |
c906108c | 4467 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4468 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4469 | cu); | |
c906108c SS |
4470 | return; |
4471 | } | |
4472 | ||
4473 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4474 | child_die = die->child; |
c906108c SS |
4475 | while (child_die && child_die->tag) |
4476 | { | |
4477 | if (child_die->tag == DW_TAG_subrange_type) | |
4478 | { | |
a02abb62 | 4479 | read_subrange_type (child_die, cu); |
c906108c | 4480 | |
a02abb62 JB |
4481 | if (child_die->type != NULL) |
4482 | { | |
4483 | /* The range type was succesfully read. Save it for | |
4484 | the array type creation. */ | |
4485 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4486 | { | |
4487 | range_types = (struct type **) | |
4488 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4489 | * sizeof (struct type *)); | |
4490 | if (ndim == 0) | |
4491 | make_cleanup (free_current_contents, &range_types); | |
4492 | } | |
4493 | range_types[ndim++] = child_die->type; | |
4494 | } | |
c906108c SS |
4495 | } |
4496 | child_die = sibling_die (child_die); | |
4497 | } | |
4498 | ||
4499 | /* Dwarf2 dimensions are output from left to right, create the | |
4500 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4501 | |
c906108c | 4502 | type = element_type; |
7ca2d3a3 DL |
4503 | |
4504 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4505 | { | |
4506 | int i = 0; | |
4507 | while (i < ndim) | |
4508 | type = create_array_type (NULL, type, range_types[i++]); | |
4509 | } | |
4510 | else | |
4511 | { | |
4512 | while (ndim-- > 0) | |
4513 | type = create_array_type (NULL, type, range_types[ndim]); | |
4514 | } | |
c906108c | 4515 | |
f5f8a009 EZ |
4516 | /* Understand Dwarf2 support for vector types (like they occur on |
4517 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4518 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4519 | custom vendor extension. The main difference between a regular | |
4520 | array and the vector variant is that vectors are passed by value | |
4521 | to functions. */ | |
e142c38c | 4522 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 4523 | if (attr) |
ea37ba09 | 4524 | make_vector_type (type); |
f5f8a009 | 4525 | |
39cbfefa DJ |
4526 | name = dwarf2_name (die, cu); |
4527 | if (name) | |
4528 | TYPE_NAME (type) = name; | |
714e295e | 4529 | |
c906108c SS |
4530 | do_cleanups (back_to); |
4531 | ||
4532 | /* Install the type in the die. */ | |
1c379e20 | 4533 | set_die_type (die, type, cu); |
c906108c SS |
4534 | } |
4535 | ||
7ca2d3a3 DL |
4536 | static enum dwarf_array_dim_ordering |
4537 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4538 | { | |
4539 | struct attribute *attr; | |
4540 | ||
4541 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4542 | ||
4543 | if (attr) return DW_SND (attr); | |
4544 | ||
4545 | /* | |
4546 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4547 | opposite order to the dwarf2 specification, but data is still | |
4548 | laid out as per normal fortran. | |
4549 | ||
4550 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4551 | version checking. | |
4552 | */ | |
4553 | ||
4554 | if (cu->language == language_fortran && | |
4555 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4556 | { | |
4557 | return DW_ORD_row_major; | |
4558 | } | |
4559 | ||
4560 | switch (cu->language_defn->la_array_ordering) | |
4561 | { | |
4562 | case array_column_major: | |
4563 | return DW_ORD_col_major; | |
4564 | case array_row_major: | |
4565 | default: | |
4566 | return DW_ORD_row_major; | |
4567 | }; | |
4568 | } | |
4569 | ||
72019c9c GM |
4570 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4571 | the DIE's type field. */ | |
4572 | ||
4573 | static void | |
4574 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4575 | { | |
4576 | if (die->type == NULL) | |
4577 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4578 | } | |
7ca2d3a3 | 4579 | |
c906108c SS |
4580 | /* First cut: install each common block member as a global variable. */ |
4581 | ||
4582 | static void | |
e7c27a73 | 4583 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4584 | { |
4585 | struct die_info *child_die; | |
4586 | struct attribute *attr; | |
4587 | struct symbol *sym; | |
4588 | CORE_ADDR base = (CORE_ADDR) 0; | |
4589 | ||
e142c38c | 4590 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4591 | if (attr) |
4592 | { | |
8e19ed76 PS |
4593 | /* Support the .debug_loc offsets */ |
4594 | if (attr_form_is_block (attr)) | |
4595 | { | |
e7c27a73 | 4596 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 4597 | } |
3690dd37 | 4598 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4599 | { |
4d3c2250 | 4600 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4601 | } |
4602 | else | |
4603 | { | |
4d3c2250 KB |
4604 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4605 | "common block member"); | |
8e19ed76 | 4606 | } |
c906108c | 4607 | } |
639d11d3 | 4608 | if (die->child != NULL) |
c906108c | 4609 | { |
639d11d3 | 4610 | child_die = die->child; |
c906108c SS |
4611 | while (child_die && child_die->tag) |
4612 | { | |
e7c27a73 | 4613 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4614 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4615 | if (attr) |
4616 | { | |
4617 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4618 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4619 | add_symbol_to_list (sym, &global_symbols); |
4620 | } | |
4621 | child_die = sibling_die (child_die); | |
4622 | } | |
4623 | } | |
4624 | } | |
4625 | ||
d9fa45fe DC |
4626 | /* Read a C++ namespace. */ |
4627 | ||
d9fa45fe | 4628 | static void |
e7c27a73 | 4629 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4630 | { |
e7c27a73 | 4631 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4632 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4633 | const char *name; |
9219021c DC |
4634 | int is_anonymous; |
4635 | struct die_info *current_die; | |
987504bb | 4636 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4637 | |
e142c38c | 4638 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4639 | |
4640 | /* Now build the name of the current namespace. */ | |
4641 | ||
38d518c9 | 4642 | if (previous_prefix[0] == '\0') |
9219021c | 4643 | { |
38d518c9 | 4644 | processing_current_prefix = name; |
9219021c DC |
4645 | } |
4646 | else | |
4647 | { | |
987504bb JJ |
4648 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4649 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4650 | processing_current_prefix = temp_name; |
9219021c DC |
4651 | } |
4652 | ||
5c4e30ca DC |
4653 | /* Add a symbol associated to this if we haven't seen the namespace |
4654 | before. Also, add a using directive if it's an anonymous | |
4655 | namespace. */ | |
9219021c | 4656 | |
e142c38c | 4657 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4658 | { |
4659 | struct type *type; | |
4660 | ||
4661 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4662 | this cast will hopefully become unnecessary. */ | |
4663 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4664 | (char *) processing_current_prefix, |
5c4e30ca DC |
4665 | objfile); |
4666 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4667 | ||
e7c27a73 | 4668 | new_symbol (die, type, cu); |
1c379e20 | 4669 | set_die_type (die, type, cu); |
5c4e30ca DC |
4670 | |
4671 | if (is_anonymous) | |
38d518c9 EZ |
4672 | cp_add_using_directive (processing_current_prefix, |
4673 | strlen (previous_prefix), | |
4674 | strlen (processing_current_prefix)); | |
5c4e30ca | 4675 | } |
9219021c | 4676 | |
639d11d3 | 4677 | if (die->child != NULL) |
d9fa45fe | 4678 | { |
639d11d3 | 4679 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4680 | |
4681 | while (child_die && child_die->tag) | |
4682 | { | |
e7c27a73 | 4683 | process_die (child_die, cu); |
d9fa45fe DC |
4684 | child_die = sibling_die (child_die); |
4685 | } | |
4686 | } | |
9219021c | 4687 | |
38d518c9 | 4688 | processing_current_prefix = previous_prefix; |
987504bb | 4689 | do_cleanups (back_to); |
38d518c9 EZ |
4690 | } |
4691 | ||
4692 | /* Return the name of the namespace represented by DIE. Set | |
4693 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4694 | namespace. */ | |
4695 | ||
4696 | static const char * | |
e142c38c | 4697 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4698 | { |
4699 | struct die_info *current_die; | |
4700 | const char *name = NULL; | |
4701 | ||
4702 | /* Loop through the extensions until we find a name. */ | |
4703 | ||
4704 | for (current_die = die; | |
4705 | current_die != NULL; | |
e142c38c | 4706 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4707 | { |
e142c38c | 4708 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4709 | if (name != NULL) |
4710 | break; | |
4711 | } | |
4712 | ||
4713 | /* Is it an anonymous namespace? */ | |
4714 | ||
4715 | *is_anonymous = (name == NULL); | |
4716 | if (*is_anonymous) | |
4717 | name = "(anonymous namespace)"; | |
4718 | ||
4719 | return name; | |
d9fa45fe DC |
4720 | } |
4721 | ||
c906108c SS |
4722 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4723 | the user defined type vector. */ | |
4724 | ||
4725 | static void | |
e7c27a73 | 4726 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4727 | { |
5e2b427d | 4728 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 4729 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4730 | struct type *type; |
8b2dbe47 KB |
4731 | struct attribute *attr_byte_size; |
4732 | struct attribute *attr_address_class; | |
4733 | int byte_size, addr_class; | |
c906108c SS |
4734 | |
4735 | if (die->type) | |
4736 | { | |
4737 | return; | |
4738 | } | |
4739 | ||
e7c27a73 | 4740 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4741 | |
e142c38c | 4742 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4743 | if (attr_byte_size) |
4744 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4745 | else |
8b2dbe47 KB |
4746 | byte_size = cu_header->addr_size; |
4747 | ||
e142c38c | 4748 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4749 | if (attr_address_class) |
4750 | addr_class = DW_UNSND (attr_address_class); | |
4751 | else | |
4752 | addr_class = DW_ADDR_none; | |
4753 | ||
4754 | /* If the pointer size or address class is different than the | |
4755 | default, create a type variant marked as such and set the | |
4756 | length accordingly. */ | |
4757 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4758 | { |
5e2b427d | 4759 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
4760 | { |
4761 | int type_flags; | |
4762 | ||
849957d9 | 4763 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 4764 | (gdbarch, byte_size, addr_class); |
8b2dbe47 KB |
4765 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); |
4766 | type = make_type_with_address_space (type, type_flags); | |
4767 | } | |
4768 | else if (TYPE_LENGTH (type) != byte_size) | |
4769 | { | |
e2e0b3e5 | 4770 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4771 | } |
4772 | else { | |
4773 | /* Should we also complain about unhandled address classes? */ | |
4774 | } | |
c906108c | 4775 | } |
8b2dbe47 KB |
4776 | |
4777 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4778 | set_die_type (die, type, cu); |
c906108c SS |
4779 | } |
4780 | ||
4781 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4782 | the user defined type vector. */ | |
4783 | ||
4784 | static void | |
e7c27a73 | 4785 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4786 | { |
e7c27a73 | 4787 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4788 | struct type *type; |
4789 | struct type *to_type; | |
4790 | struct type *domain; | |
4791 | ||
4792 | if (die->type) | |
4793 | { | |
4794 | return; | |
4795 | } | |
4796 | ||
e7c27a73 DJ |
4797 | to_type = die_type (die, cu); |
4798 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4799 | |
4800 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4801 | type = lookup_methodptr_type (to_type); | |
4802 | else | |
4803 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4804 | |
1c379e20 | 4805 | set_die_type (die, type, cu); |
c906108c SS |
4806 | } |
4807 | ||
4808 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4809 | the user defined type vector. */ | |
4810 | ||
4811 | static void | |
e7c27a73 | 4812 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4813 | { |
e7c27a73 | 4814 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4815 | struct type *type; |
4816 | struct attribute *attr; | |
4817 | ||
4818 | if (die->type) | |
4819 | { | |
4820 | return; | |
4821 | } | |
4822 | ||
e7c27a73 | 4823 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4824 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4825 | if (attr) |
4826 | { | |
4827 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4828 | } | |
4829 | else | |
4830 | { | |
107d2387 | 4831 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4832 | } |
1c379e20 | 4833 | set_die_type (die, type, cu); |
c906108c SS |
4834 | } |
4835 | ||
4836 | static void | |
e7c27a73 | 4837 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4838 | { |
090c42a4 JB |
4839 | struct type *base_type; |
4840 | ||
c906108c SS |
4841 | if (die->type) |
4842 | { | |
4843 | return; | |
4844 | } | |
4845 | ||
e7c27a73 | 4846 | base_type = die_type (die, cu); |
1c379e20 DJ |
4847 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4848 | cu); | |
c906108c SS |
4849 | } |
4850 | ||
4851 | static void | |
e7c27a73 | 4852 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4853 | { |
090c42a4 JB |
4854 | struct type *base_type; |
4855 | ||
c906108c SS |
4856 | if (die->type) |
4857 | { | |
4858 | return; | |
4859 | } | |
4860 | ||
e7c27a73 | 4861 | base_type = die_type (die, cu); |
1c379e20 DJ |
4862 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4863 | cu); | |
c906108c SS |
4864 | } |
4865 | ||
4866 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4867 | the user defined type vector. It isn't really a user defined type, | |
4868 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4869 | attribute to reference it. */ | |
4870 | ||
4871 | static void | |
e7c27a73 | 4872 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4873 | { |
e7c27a73 | 4874 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4875 | struct type *type, *range_type, *index_type, *char_type; |
4876 | struct attribute *attr; | |
4877 | unsigned int length; | |
4878 | ||
4879 | if (die->type) | |
4880 | { | |
4881 | return; | |
4882 | } | |
4883 | ||
e142c38c | 4884 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4885 | if (attr) |
4886 | { | |
4887 | length = DW_UNSND (attr); | |
4888 | } | |
4889 | else | |
4890 | { | |
b21b22e0 | 4891 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4892 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4893 | if (attr) |
4894 | { | |
4895 | length = DW_UNSND (attr); | |
4896 | } | |
4897 | else | |
4898 | { | |
4899 | length = 1; | |
4900 | } | |
c906108c | 4901 | } |
6ccb9162 UW |
4902 | |
4903 | index_type = builtin_type_int32; | |
c906108c | 4904 | range_type = create_range_type (NULL, index_type, 1, length); |
6ccb9162 UW |
4905 | type = create_string_type (NULL, range_type); |
4906 | ||
1c379e20 | 4907 | set_die_type (die, type, cu); |
c906108c SS |
4908 | } |
4909 | ||
4910 | /* Handle DIES due to C code like: | |
4911 | ||
4912 | struct foo | |
c5aa993b JM |
4913 | { |
4914 | int (*funcp)(int a, long l); | |
4915 | int b; | |
4916 | }; | |
c906108c SS |
4917 | |
4918 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4919 | */ |
c906108c SS |
4920 | |
4921 | static void | |
e7c27a73 | 4922 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4923 | { |
4924 | struct type *type; /* Type that this function returns */ | |
4925 | struct type *ftype; /* Function that returns above type */ | |
4926 | struct attribute *attr; | |
4927 | ||
4928 | /* Decode the type that this subroutine returns */ | |
4929 | if (die->type) | |
4930 | { | |
4931 | return; | |
4932 | } | |
e7c27a73 | 4933 | type = die_type (die, cu); |
1326e61b | 4934 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4935 | |
5b8101ae | 4936 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 4937 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4938 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 4939 | || cu->language == language_cplus |
5b8101ae PM |
4940 | || cu->language == language_java |
4941 | || cu->language == language_pascal) | |
c906108c SS |
4942 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4943 | ||
639d11d3 | 4944 | if (die->child != NULL) |
c906108c SS |
4945 | { |
4946 | struct die_info *child_die; | |
4947 | int nparams = 0; | |
4948 | int iparams = 0; | |
4949 | ||
4950 | /* Count the number of parameters. | |
4951 | FIXME: GDB currently ignores vararg functions, but knows about | |
4952 | vararg member functions. */ | |
639d11d3 | 4953 | child_die = die->child; |
c906108c SS |
4954 | while (child_die && child_die->tag) |
4955 | { | |
4956 | if (child_die->tag == DW_TAG_formal_parameter) | |
4957 | nparams++; | |
4958 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4959 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4960 | child_die = sibling_die (child_die); | |
4961 | } | |
4962 | ||
4963 | /* Allocate storage for parameters and fill them in. */ | |
4964 | TYPE_NFIELDS (ftype) = nparams; | |
4965 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4966 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4967 | |
639d11d3 | 4968 | child_die = die->child; |
c906108c SS |
4969 | while (child_die && child_die->tag) |
4970 | { | |
4971 | if (child_die->tag == DW_TAG_formal_parameter) | |
4972 | { | |
4973 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4974 | member functions. G++ helps GDB by marking the first |
4975 | parameter for non-static member functions (which is the | |
4976 | this pointer) as artificial. We pass this information | |
4977 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4978 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4979 | if (attr) |
4980 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4981 | else | |
4982 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4983 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4984 | iparams++; |
4985 | } | |
4986 | child_die = sibling_die (child_die); | |
4987 | } | |
4988 | } | |
4989 | ||
1c379e20 | 4990 | set_die_type (die, ftype, cu); |
c906108c SS |
4991 | } |
4992 | ||
4993 | static void | |
e7c27a73 | 4994 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4995 | { |
e7c27a73 | 4996 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4997 | struct attribute *attr; |
4998 | char *name = NULL; | |
c906108c SS |
4999 | |
5000 | if (!die->type) | |
5001 | { | |
39cbfefa | 5002 | name = dwarf2_name (die, cu); |
1c379e20 DJ |
5003 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
5004 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
5005 | cu); | |
e7c27a73 | 5006 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
5007 | } |
5008 | } | |
5009 | ||
5010 | /* Find a representation of a given base type and install | |
5011 | it in the TYPE field of the die. */ | |
5012 | ||
5013 | static void | |
e7c27a73 | 5014 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5015 | { |
e7c27a73 | 5016 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5017 | struct type *type; |
5018 | struct attribute *attr; | |
5019 | int encoding = 0, size = 0; | |
39cbfefa | 5020 | char *name; |
6ccb9162 UW |
5021 | enum type_code code = TYPE_CODE_INT; |
5022 | int type_flags = 0; | |
5023 | struct type *target_type = NULL; | |
c906108c SS |
5024 | |
5025 | /* If we've already decoded this die, this is a no-op. */ | |
5026 | if (die->type) | |
5027 | { | |
5028 | return; | |
5029 | } | |
5030 | ||
e142c38c | 5031 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
5032 | if (attr) |
5033 | { | |
5034 | encoding = DW_UNSND (attr); | |
5035 | } | |
e142c38c | 5036 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5037 | if (attr) |
5038 | { | |
5039 | size = DW_UNSND (attr); | |
5040 | } | |
39cbfefa | 5041 | name = dwarf2_name (die, cu); |
6ccb9162 | 5042 | if (!name) |
c906108c | 5043 | { |
6ccb9162 UW |
5044 | complaint (&symfile_complaints, |
5045 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 5046 | } |
6ccb9162 UW |
5047 | |
5048 | switch (encoding) | |
c906108c | 5049 | { |
6ccb9162 UW |
5050 | case DW_ATE_address: |
5051 | /* Turn DW_ATE_address into a void * pointer. */ | |
5052 | code = TYPE_CODE_PTR; | |
5053 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5054 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
5055 | break; | |
5056 | case DW_ATE_boolean: | |
5057 | code = TYPE_CODE_BOOL; | |
5058 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5059 | break; | |
5060 | case DW_ATE_complex_float: | |
5061 | code = TYPE_CODE_COMPLEX; | |
5062 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
5063 | break; | |
5064 | case DW_ATE_decimal_float: | |
5065 | code = TYPE_CODE_DECFLOAT; | |
5066 | break; | |
5067 | case DW_ATE_float: | |
5068 | code = TYPE_CODE_FLT; | |
5069 | break; | |
5070 | case DW_ATE_signed: | |
5071 | break; | |
5072 | case DW_ATE_unsigned: | |
5073 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5074 | break; | |
5075 | case DW_ATE_signed_char: | |
1760d9d5 | 5076 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5077 | code = TYPE_CODE_CHAR; |
5078 | break; | |
5079 | case DW_ATE_unsigned_char: | |
1760d9d5 | 5080 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5081 | code = TYPE_CODE_CHAR; |
5082 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5083 | break; | |
5084 | default: | |
5085 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
5086 | dwarf_type_encoding_name (encoding)); | |
5087 | break; | |
c906108c | 5088 | } |
6ccb9162 UW |
5089 | |
5090 | type = init_type (code, size, type_flags, name, objfile); | |
5091 | TYPE_TARGET_TYPE (type) = target_type; | |
5092 | ||
1c379e20 | 5093 | set_die_type (die, type, cu); |
c906108c SS |
5094 | } |
5095 | ||
a02abb62 JB |
5096 | /* Read the given DW_AT_subrange DIE. */ |
5097 | ||
5098 | static void | |
5099 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
5100 | { | |
5e2b427d | 5101 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
5102 | struct type *base_type; |
5103 | struct type *range_type; | |
5104 | struct attribute *attr; | |
5105 | int low = 0; | |
5106 | int high = -1; | |
39cbfefa | 5107 | char *name; |
a02abb62 JB |
5108 | |
5109 | /* If we have already decoded this die, then nothing more to do. */ | |
5110 | if (die->type) | |
5111 | return; | |
5112 | ||
5113 | base_type = die_type (die, cu); | |
3d1f72c2 | 5114 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
5115 | { |
5116 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5117 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 5118 | base_type |
5e2b427d | 5119 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8, |
6ccb9162 | 5120 | 0, NULL, cu->objfile); |
a02abb62 JB |
5121 | } |
5122 | ||
e142c38c | 5123 | if (cu->language == language_fortran) |
a02abb62 JB |
5124 | { |
5125 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
5126 | low = 1; | |
5127 | } | |
5128 | ||
dd5e6932 DJ |
5129 | /* FIXME: For variable sized arrays either of these could be |
5130 | a variable rather than a constant value. We'll allow it, | |
5131 | but we don't know how to handle it. */ | |
e142c38c | 5132 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
5133 | if (attr) |
5134 | low = dwarf2_get_attr_constant_value (attr, 0); | |
5135 | ||
e142c38c | 5136 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
5137 | if (attr) |
5138 | { | |
5139 | if (attr->form == DW_FORM_block1) | |
5140 | { | |
5141 | /* GCC encodes arrays with unspecified or dynamic length | |
5142 | with a DW_FORM_block1 attribute. | |
5143 | FIXME: GDB does not yet know how to handle dynamic | |
5144 | arrays properly, treat them as arrays with unspecified | |
5145 | length for now. | |
5146 | ||
5147 | FIXME: jimb/2003-09-22: GDB does not really know | |
5148 | how to handle arrays of unspecified length | |
5149 | either; we just represent them as zero-length | |
5150 | arrays. Choose an appropriate upper bound given | |
5151 | the lower bound we've computed above. */ | |
5152 | high = low - 1; | |
5153 | } | |
5154 | else | |
5155 | high = dwarf2_get_attr_constant_value (attr, 1); | |
5156 | } | |
5157 | ||
5158 | range_type = create_range_type (NULL, base_type, low, high); | |
5159 | ||
39cbfefa DJ |
5160 | name = dwarf2_name (die, cu); |
5161 | if (name) | |
5162 | TYPE_NAME (range_type) = name; | |
a02abb62 | 5163 | |
e142c38c | 5164 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
5165 | if (attr) |
5166 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
5167 | ||
1c379e20 | 5168 | set_die_type (die, range_type, cu); |
a02abb62 JB |
5169 | } |
5170 | ||
81a17f79 JB |
5171 | static void |
5172 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
5173 | { | |
5174 | struct type *type; | |
81a17f79 JB |
5175 | |
5176 | if (die->type) | |
5177 | return; | |
5178 | ||
5179 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
5180 | ||
39cbfefa | 5181 | type = init_type (TYPE_CODE_VOID, 0, 0, dwarf2_name (die, cu), |
81a17f79 JB |
5182 | cu->objfile); |
5183 | ||
5184 | set_die_type (die, type, cu); | |
5185 | } | |
a02abb62 | 5186 | |
c906108c SS |
5187 | /* Read a whole compilation unit into a linked list of dies. */ |
5188 | ||
f9aca02d | 5189 | static struct die_info * |
fe1b8b76 | 5190 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5191 | { |
e7c27a73 | 5192 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
5193 | } |
5194 | ||
5195 | /* Read a single die and all its descendents. Set the die's sibling | |
5196 | field to NULL; set other fields in the die correctly, and set all | |
5197 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
5198 | location of the info_ptr after reading all of those dies. PARENT | |
5199 | is the parent of the die in question. */ | |
5200 | ||
5201 | static struct die_info * | |
fe1b8b76 | 5202 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5203 | struct dwarf2_cu *cu, |
fe1b8b76 | 5204 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5205 | struct die_info *parent) |
5206 | { | |
5207 | struct die_info *die; | |
fe1b8b76 | 5208 | gdb_byte *cur_ptr; |
639d11d3 DC |
5209 | int has_children; |
5210 | ||
e7c27a73 | 5211 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 5212 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
5213 | |
5214 | if (has_children) | |
5215 | { | |
e7c27a73 | 5216 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5217 | new_info_ptr, die); |
5218 | } | |
5219 | else | |
5220 | { | |
5221 | die->child = NULL; | |
5222 | *new_info_ptr = cur_ptr; | |
5223 | } | |
5224 | ||
5225 | die->sibling = NULL; | |
5226 | die->parent = parent; | |
5227 | return die; | |
5228 | } | |
5229 | ||
5230 | /* Read a die, all of its descendents, and all of its siblings; set | |
5231 | all of the fields of all of the dies correctly. Arguments are as | |
5232 | in read_die_and_children. */ | |
5233 | ||
5234 | static struct die_info * | |
fe1b8b76 | 5235 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5236 | struct dwarf2_cu *cu, |
fe1b8b76 | 5237 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5238 | struct die_info *parent) |
5239 | { | |
5240 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5241 | gdb_byte *cur_ptr; |
639d11d3 | 5242 | |
c906108c | 5243 | cur_ptr = info_ptr; |
639d11d3 DC |
5244 | first_die = last_sibling = NULL; |
5245 | ||
5246 | while (1) | |
c906108c | 5247 | { |
639d11d3 | 5248 | struct die_info *die |
e7c27a73 | 5249 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
5250 | |
5251 | if (!first_die) | |
c906108c | 5252 | { |
639d11d3 | 5253 | first_die = die; |
c906108c | 5254 | } |
639d11d3 | 5255 | else |
c906108c | 5256 | { |
639d11d3 | 5257 | last_sibling->sibling = die; |
c906108c SS |
5258 | } |
5259 | ||
639d11d3 | 5260 | if (die->tag == 0) |
c906108c | 5261 | { |
639d11d3 DC |
5262 | *new_info_ptr = cur_ptr; |
5263 | return first_die; | |
c906108c SS |
5264 | } |
5265 | else | |
5266 | { | |
639d11d3 | 5267 | last_sibling = die; |
c906108c SS |
5268 | } |
5269 | } | |
c906108c SS |
5270 | } |
5271 | ||
5272 | /* Free a linked list of dies. */ | |
5273 | ||
5274 | static void | |
fba45db2 | 5275 | free_die_list (struct die_info *dies) |
c906108c SS |
5276 | { |
5277 | struct die_info *die, *next; | |
5278 | ||
5279 | die = dies; | |
5280 | while (die) | |
5281 | { | |
639d11d3 DC |
5282 | if (die->child != NULL) |
5283 | free_die_list (die->child); | |
5284 | next = die->sibling; | |
b8c9b27d KB |
5285 | xfree (die->attrs); |
5286 | xfree (die); | |
c906108c SS |
5287 | die = next; |
5288 | } | |
5289 | } | |
5290 | ||
233a11ab CS |
5291 | /* Decompress a section that was compressed using zlib. Store the |
5292 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
5293 | ||
5294 | static void | |
5295 | zlib_decompress_section (struct objfile *objfile, asection *sectp, | |
5296 | gdb_byte **outbuf, bfd_size_type *outsize) | |
5297 | { | |
ef72380d | 5298 | bfd *abfd = objfile->obfd; |
233a11ab CS |
5299 | #ifndef HAVE_ZLIB_H |
5300 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
5301 | "is disabled in this copy of GDB"), | |
5302 | bfd_get_filename (abfd)); | |
5303 | #else | |
233a11ab CS |
5304 | bfd_size_type compressed_size = bfd_get_section_size (sectp); |
5305 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
5306 | bfd_size_type uncompressed_size; | |
5307 | gdb_byte *uncompressed_buffer; | |
5308 | z_stream strm; | |
5309 | int rc; | |
5310 | int header_size = 12; | |
5311 | ||
5312 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
5313 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
5314 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
5315 | bfd_get_filename (abfd)); | |
5316 | ||
5317 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
5318 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
5319 | if (compressed_size < header_size | |
5320 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
5321 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
5322 | bfd_get_filename (abfd)); | |
5323 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
5324 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
5325 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
5326 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
5327 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
5328 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
5329 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
5330 | uncompressed_size += compressed_buffer[11]; | |
5331 | ||
5332 | /* It is possible the section consists of several compressed | |
5333 | buffers concatenated together, so we uncompress in a loop. */ | |
5334 | strm.zalloc = NULL; | |
5335 | strm.zfree = NULL; | |
5336 | strm.opaque = NULL; | |
5337 | strm.avail_in = compressed_size - header_size; | |
5338 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
5339 | strm.avail_out = uncompressed_size; | |
5340 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
5341 | uncompressed_size); | |
5342 | rc = inflateInit (&strm); | |
5343 | while (strm.avail_in > 0) | |
5344 | { | |
5345 | if (rc != Z_OK) | |
5346 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
5347 | bfd_get_filename (abfd), rc); | |
5348 | strm.next_out = ((Bytef*) uncompressed_buffer | |
5349 | + (uncompressed_size - strm.avail_out)); | |
5350 | rc = inflate (&strm, Z_FINISH); | |
5351 | if (rc != Z_STREAM_END) | |
5352 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
5353 | bfd_get_filename (abfd), rc); | |
5354 | rc = inflateReset (&strm); | |
5355 | } | |
5356 | rc = inflateEnd (&strm); | |
5357 | if (rc != Z_OK | |
5358 | || strm.avail_out != 0) | |
5359 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
5360 | bfd_get_filename (abfd), rc); | |
5361 | ||
5362 | xfree (compressed_buffer); | |
5363 | *outbuf = uncompressed_buffer; | |
5364 | *outsize = uncompressed_size; | |
5365 | #endif | |
5366 | } | |
5367 | ||
5368 | ||
c906108c | 5369 | /* Read the contents of the section at OFFSET and of size SIZE from the |
233a11ab CS |
5370 | object file specified by OBJFILE into the objfile_obstack and return it. |
5371 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 5372 | |
fe1b8b76 | 5373 | gdb_byte * |
188dd5d6 | 5374 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5375 | { |
5376 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5377 | gdb_byte *buf, *retbuf; |
2c500098 | 5378 | bfd_size_type size = bfd_get_section_size (sectp); |
233a11ab | 5379 | unsigned char header[4]; |
c906108c SS |
5380 | |
5381 | if (size == 0) | |
5382 | return NULL; | |
5383 | ||
233a11ab CS |
5384 | /* Check if the file has a 4-byte header indicating compression. */ |
5385 | if (size > sizeof (header) | |
5386 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
5387 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
5388 | { | |
5389 | /* Upon decompression, update the buffer and its size. */ | |
5390 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
5391 | { | |
5392 | zlib_decompress_section (objfile, sectp, &buf, &size); | |
5393 | dwarf2_resize_section (sectp, size); | |
5394 | return buf; | |
5395 | } | |
5396 | } | |
5397 | ||
5398 | /* If we get here, we are a normal, not-compressed section. */ | |
fe1b8b76 | 5399 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
233a11ab CS |
5400 | /* When debugging .o files, we may need to apply relocations; see |
5401 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
5402 | We never compress sections in .o files, so we only need to | |
5403 | try this when the section is not compressed. */ | |
fe1b8b76 | 5404 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); |
086df311 DJ |
5405 | if (retbuf != NULL) |
5406 | return retbuf; | |
5407 | ||
188dd5d6 DJ |
5408 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5409 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5410 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5411 | bfd_get_filename (abfd)); |
5412 | ||
c906108c SS |
5413 | return buf; |
5414 | } | |
5415 | ||
5416 | /* In DWARF version 2, the description of the debugging information is | |
5417 | stored in a separate .debug_abbrev section. Before we read any | |
5418 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5419 | in a hash table. This function also sets flags in CU describing |
5420 | the data found in the abbrev table. */ | |
c906108c SS |
5421 | |
5422 | static void | |
e7c27a73 | 5423 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5424 | { |
e7c27a73 | 5425 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5426 | gdb_byte *abbrev_ptr; |
c906108c SS |
5427 | struct abbrev_info *cur_abbrev; |
5428 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5429 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5430 | struct attr_abbrev *cur_attrs; |
5431 | unsigned int allocated_attrs; | |
c906108c | 5432 | |
57349743 | 5433 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5434 | obstack_init (&cu->abbrev_obstack); |
5435 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5436 | (ABBREV_HASH_SIZE | |
5437 | * sizeof (struct abbrev_info *))); | |
5438 | memset (cu->dwarf2_abbrevs, 0, | |
5439 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5440 | |
6502dd73 | 5441 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5442 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5443 | abbrev_ptr += bytes_read; | |
5444 | ||
f3dd6933 DJ |
5445 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5446 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5447 | ||
c906108c SS |
5448 | /* loop until we reach an abbrev number of 0 */ |
5449 | while (abbrev_number) | |
5450 | { | |
f3dd6933 | 5451 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5452 | |
5453 | /* read in abbrev header */ | |
5454 | cur_abbrev->number = abbrev_number; | |
5455 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5456 | abbrev_ptr += bytes_read; | |
5457 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5458 | abbrev_ptr += 1; | |
5459 | ||
72bf9492 DJ |
5460 | if (cur_abbrev->tag == DW_TAG_namespace) |
5461 | cu->has_namespace_info = 1; | |
5462 | ||
c906108c SS |
5463 | /* now read in declarations */ |
5464 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5465 | abbrev_ptr += bytes_read; | |
5466 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5467 | abbrev_ptr += bytes_read; | |
5468 | while (abbrev_name) | |
5469 | { | |
f3dd6933 | 5470 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5471 | { |
f3dd6933 DJ |
5472 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5473 | cur_attrs | |
5474 | = xrealloc (cur_attrs, (allocated_attrs | |
5475 | * sizeof (struct attr_abbrev))); | |
c906108c | 5476 | } |
ae038cb0 DJ |
5477 | |
5478 | /* Record whether this compilation unit might have | |
5479 | inter-compilation-unit references. If we don't know what form | |
5480 | this attribute will have, then it might potentially be a | |
5481 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5482 | references. */ | |
5483 | ||
5484 | if (abbrev_form == DW_FORM_ref_addr | |
5485 | || abbrev_form == DW_FORM_indirect) | |
5486 | cu->has_form_ref_addr = 1; | |
5487 | ||
f3dd6933 DJ |
5488 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5489 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5490 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5491 | abbrev_ptr += bytes_read; | |
5492 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5493 | abbrev_ptr += bytes_read; | |
5494 | } | |
5495 | ||
f3dd6933 DJ |
5496 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5497 | (cur_abbrev->num_attrs | |
5498 | * sizeof (struct attr_abbrev))); | |
5499 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5500 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5501 | ||
c906108c | 5502 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5503 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5504 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5505 | |
5506 | /* Get next abbreviation. | |
5507 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5508 | always properly terminated with an abbrev number of 0. |
5509 | Exit loop if we encounter an abbreviation which we have | |
5510 | already read (which means we are about to read the abbreviations | |
5511 | for the next compile unit) or if the end of the abbreviation | |
5512 | table is reached. */ | |
6502dd73 DJ |
5513 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5514 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5515 | break; |
5516 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5517 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5518 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5519 | break; |
5520 | } | |
f3dd6933 DJ |
5521 | |
5522 | xfree (cur_attrs); | |
c906108c SS |
5523 | } |
5524 | ||
f3dd6933 | 5525 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5526 | |
c906108c | 5527 | static void |
f3dd6933 | 5528 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5529 | { |
f3dd6933 | 5530 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5531 | |
f3dd6933 DJ |
5532 | obstack_free (&cu->abbrev_obstack, NULL); |
5533 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5534 | } |
5535 | ||
5536 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5537 | ||
5538 | static struct abbrev_info * | |
e7c27a73 | 5539 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5540 | { |
5541 | unsigned int hash_number; | |
5542 | struct abbrev_info *abbrev; | |
5543 | ||
5544 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5545 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5546 | |
5547 | while (abbrev) | |
5548 | { | |
5549 | if (abbrev->number == number) | |
5550 | return abbrev; | |
5551 | else | |
5552 | abbrev = abbrev->next; | |
5553 | } | |
5554 | return NULL; | |
5555 | } | |
5556 | ||
72bf9492 DJ |
5557 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5558 | symbol for. */ | |
5559 | ||
5560 | static int | |
5561 | is_type_tag_for_partial (int tag) | |
5562 | { | |
5563 | switch (tag) | |
5564 | { | |
5565 | #if 0 | |
5566 | /* Some types that would be reasonable to generate partial symbols for, | |
5567 | that we don't at present. */ | |
5568 | case DW_TAG_array_type: | |
5569 | case DW_TAG_file_type: | |
5570 | case DW_TAG_ptr_to_member_type: | |
5571 | case DW_TAG_set_type: | |
5572 | case DW_TAG_string_type: | |
5573 | case DW_TAG_subroutine_type: | |
5574 | #endif | |
5575 | case DW_TAG_base_type: | |
5576 | case DW_TAG_class_type: | |
680b30c7 | 5577 | case DW_TAG_interface_type: |
72bf9492 DJ |
5578 | case DW_TAG_enumeration_type: |
5579 | case DW_TAG_structure_type: | |
5580 | case DW_TAG_subrange_type: | |
5581 | case DW_TAG_typedef: | |
5582 | case DW_TAG_union_type: | |
5583 | return 1; | |
5584 | default: | |
5585 | return 0; | |
5586 | } | |
5587 | } | |
5588 | ||
5589 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5590 | ||
5591 | static struct partial_die_info * | |
fe1b8b76 | 5592 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5593 | struct dwarf2_cu *cu) |
5594 | { | |
5595 | struct partial_die_info *part_die; | |
5596 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5597 | struct abbrev_info *abbrev; | |
5598 | unsigned int bytes_read; | |
5afb4e99 | 5599 | unsigned int load_all = 0; |
72bf9492 DJ |
5600 | |
5601 | int nesting_level = 1; | |
5602 | ||
5603 | parent_die = NULL; | |
5604 | last_die = NULL; | |
5605 | ||
5afb4e99 DJ |
5606 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5607 | load_all = 1; | |
5608 | ||
72bf9492 DJ |
5609 | cu->partial_dies |
5610 | = htab_create_alloc_ex (cu->header.length / 12, | |
5611 | partial_die_hash, | |
5612 | partial_die_eq, | |
5613 | NULL, | |
5614 | &cu->comp_unit_obstack, | |
5615 | hashtab_obstack_allocate, | |
5616 | dummy_obstack_deallocate); | |
5617 | ||
5618 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5619 | sizeof (struct partial_die_info)); | |
5620 | ||
5621 | while (1) | |
5622 | { | |
5623 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5624 | ||
5625 | /* A NULL abbrev means the end of a series of children. */ | |
5626 | if (abbrev == NULL) | |
5627 | { | |
5628 | if (--nesting_level == 0) | |
5629 | { | |
5630 | /* PART_DIE was probably the last thing allocated on the | |
5631 | comp_unit_obstack, so we could call obstack_free | |
5632 | here. We don't do that because the waste is small, | |
5633 | and will be cleaned up when we're done with this | |
5634 | compilation unit. This way, we're also more robust | |
5635 | against other users of the comp_unit_obstack. */ | |
5636 | return first_die; | |
5637 | } | |
5638 | info_ptr += bytes_read; | |
5639 | last_die = parent_die; | |
5640 | parent_die = parent_die->die_parent; | |
5641 | continue; | |
5642 | } | |
5643 | ||
5afb4e99 DJ |
5644 | /* Check whether this DIE is interesting enough to save. Normally |
5645 | we would not be interested in members here, but there may be | |
5646 | later variables referencing them via DW_AT_specification (for | |
5647 | static members). */ | |
5648 | if (!load_all | |
5649 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5650 | && abbrev->tag != DW_TAG_enumerator |
5651 | && abbrev->tag != DW_TAG_subprogram | |
5652 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5653 | && abbrev->tag != DW_TAG_namespace |
5654 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5655 | { |
5656 | /* Otherwise we skip to the next sibling, if any. */ | |
5657 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5658 | continue; | |
5659 | } | |
5660 | ||
5661 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5662 | abfd, info_ptr, cu); | |
5663 | ||
5664 | /* This two-pass algorithm for processing partial symbols has a | |
5665 | high cost in cache pressure. Thus, handle some simple cases | |
5666 | here which cover the majority of C partial symbols. DIEs | |
5667 | which neither have specification tags in them, nor could have | |
5668 | specification tags elsewhere pointing at them, can simply be | |
5669 | processed and discarded. | |
5670 | ||
5671 | This segment is also optional; scan_partial_symbols and | |
5672 | add_partial_symbol will handle these DIEs if we chain | |
5673 | them in normally. When compilers which do not emit large | |
5674 | quantities of duplicate debug information are more common, | |
5675 | this code can probably be removed. */ | |
5676 | ||
5677 | /* Any complete simple types at the top level (pretty much all | |
5678 | of them, for a language without namespaces), can be processed | |
5679 | directly. */ | |
5680 | if (parent_die == NULL | |
5681 | && part_die->has_specification == 0 | |
5682 | && part_die->is_declaration == 0 | |
5683 | && (part_die->tag == DW_TAG_typedef | |
5684 | || part_die->tag == DW_TAG_base_type | |
5685 | || part_die->tag == DW_TAG_subrange_type)) | |
5686 | { | |
5687 | if (building_psymtab && part_die->name != NULL) | |
5688 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5689 | VAR_DOMAIN, LOC_TYPEDEF, | |
5690 | &cu->objfile->static_psymbols, | |
5691 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5692 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5693 | continue; | |
5694 | } | |
5695 | ||
5696 | /* If we're at the second level, and we're an enumerator, and | |
5697 | our parent has no specification (meaning possibly lives in a | |
5698 | namespace elsewhere), then we can add the partial symbol now | |
5699 | instead of queueing it. */ | |
5700 | if (part_die->tag == DW_TAG_enumerator | |
5701 | && parent_die != NULL | |
5702 | && parent_die->die_parent == NULL | |
5703 | && parent_die->tag == DW_TAG_enumeration_type | |
5704 | && parent_die->has_specification == 0) | |
5705 | { | |
5706 | if (part_die->name == NULL) | |
e2e0b3e5 | 5707 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5708 | else if (building_psymtab) |
5709 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5710 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5711 | (cu->language == language_cplus |
5712 | || cu->language == language_java) | |
72bf9492 DJ |
5713 | ? &cu->objfile->global_psymbols |
5714 | : &cu->objfile->static_psymbols, | |
5715 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5716 | ||
5717 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5718 | continue; | |
5719 | } | |
5720 | ||
5721 | /* We'll save this DIE so link it in. */ | |
5722 | part_die->die_parent = parent_die; | |
5723 | part_die->die_sibling = NULL; | |
5724 | part_die->die_child = NULL; | |
5725 | ||
5726 | if (last_die && last_die == parent_die) | |
5727 | last_die->die_child = part_die; | |
5728 | else if (last_die) | |
5729 | last_die->die_sibling = part_die; | |
5730 | ||
5731 | last_die = part_die; | |
5732 | ||
5733 | if (first_die == NULL) | |
5734 | first_die = part_die; | |
5735 | ||
5736 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5737 | find interesting need to be in the hash table, because we | |
5738 | also have the parent/sibling/child chains; only those that we | |
5739 | might refer to by offset later during partial symbol reading. | |
5740 | ||
5741 | For now this means things that might have be the target of a | |
5742 | DW_AT_specification, DW_AT_abstract_origin, or | |
5743 | DW_AT_extension. DW_AT_extension will refer only to | |
5744 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5745 | many things under the function DIE, but we do not recurse | |
5746 | into function DIEs during partial symbol reading) and | |
5747 | possibly variables as well; DW_AT_specification refers to | |
5748 | declarations. Declarations ought to have the DW_AT_declaration | |
5749 | flag. It happens that GCC forgets to put it in sometimes, but | |
5750 | only for functions, not for types. | |
5751 | ||
5752 | Adding more things than necessary to the hash table is harmless | |
5753 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5754 | wasted time in find_partial_die, when we reread the compilation |
5755 | unit with load_all_dies set. */ | |
72bf9492 | 5756 | |
5afb4e99 DJ |
5757 | if (load_all |
5758 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5759 | || abbrev->tag == DW_TAG_variable |
5760 | || abbrev->tag == DW_TAG_namespace | |
5761 | || part_die->is_declaration) | |
5762 | { | |
5763 | void **slot; | |
5764 | ||
5765 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5766 | part_die->offset, INSERT); | |
5767 | *slot = part_die; | |
5768 | } | |
5769 | ||
5770 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5771 | sizeof (struct partial_die_info)); | |
5772 | ||
5773 | /* For some DIEs we want to follow their children (if any). For C | |
5774 | we have no reason to follow the children of structures; for other | |
5775 | languages we have to, both so that we can get at method physnames | |
5776 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5777 | if (last_die->has_children | |
5afb4e99 DJ |
5778 | && (load_all |
5779 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5780 | || last_die->tag == DW_TAG_enumeration_type |
5781 | || (cu->language != language_c | |
5782 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 5783 | || last_die->tag == DW_TAG_interface_type |
72bf9492 DJ |
5784 | || last_die->tag == DW_TAG_structure_type |
5785 | || last_die->tag == DW_TAG_union_type)))) | |
5786 | { | |
5787 | nesting_level++; | |
5788 | parent_die = last_die; | |
5789 | continue; | |
5790 | } | |
5791 | ||
5792 | /* Otherwise we skip to the next sibling, if any. */ | |
5793 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5794 | ||
5795 | /* Back to the top, do it again. */ | |
5796 | } | |
5797 | } | |
5798 | ||
c906108c SS |
5799 | /* Read a minimal amount of information into the minimal die structure. */ |
5800 | ||
fe1b8b76 | 5801 | static gdb_byte * |
72bf9492 DJ |
5802 | read_partial_die (struct partial_die_info *part_die, |
5803 | struct abbrev_info *abbrev, | |
5804 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5805 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5806 | { |
72bf9492 | 5807 | unsigned int bytes_read, i; |
c906108c | 5808 | struct attribute attr; |
c5aa993b | 5809 | int has_low_pc_attr = 0; |
c906108c SS |
5810 | int has_high_pc_attr = 0; |
5811 | ||
72bf9492 | 5812 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5813 | |
6502dd73 | 5814 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5815 | |
5816 | info_ptr += abbrev_len; | |
5817 | ||
5818 | if (abbrev == NULL) | |
5819 | return info_ptr; | |
5820 | ||
c906108c SS |
5821 | part_die->tag = abbrev->tag; |
5822 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5823 | |
5824 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5825 | { | |
e7c27a73 | 5826 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5827 | |
5828 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5829 | partial symbol table. */ |
c906108c SS |
5830 | switch (attr.name) |
5831 | { | |
5832 | case DW_AT_name: | |
5833 | ||
5834 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5835 | if (part_die->name == NULL) | |
5836 | part_die->name = DW_STRING (&attr); | |
5837 | break; | |
57c22c6c BR |
5838 | case DW_AT_comp_dir: |
5839 | if (part_die->dirname == NULL) | |
5840 | part_die->dirname = DW_STRING (&attr); | |
5841 | break; | |
c906108c SS |
5842 | case DW_AT_MIPS_linkage_name: |
5843 | part_die->name = DW_STRING (&attr); | |
5844 | break; | |
5845 | case DW_AT_low_pc: | |
5846 | has_low_pc_attr = 1; | |
5847 | part_die->lowpc = DW_ADDR (&attr); | |
5848 | break; | |
5849 | case DW_AT_high_pc: | |
5850 | has_high_pc_attr = 1; | |
5851 | part_die->highpc = DW_ADDR (&attr); | |
5852 | break; | |
43039443 JK |
5853 | case DW_AT_ranges: |
5854 | if (dwarf2_ranges_read (DW_UNSND (&attr), &part_die->lowpc, | |
5855 | &part_die->highpc, cu)) | |
5856 | has_low_pc_attr = has_high_pc_attr = 1; | |
5857 | break; | |
c906108c | 5858 | case DW_AT_location: |
8e19ed76 PS |
5859 | /* Support the .debug_loc offsets */ |
5860 | if (attr_form_is_block (&attr)) | |
5861 | { | |
5862 | part_die->locdesc = DW_BLOCK (&attr); | |
5863 | } | |
3690dd37 | 5864 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 5865 | { |
4d3c2250 | 5866 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5867 | } |
5868 | else | |
5869 | { | |
4d3c2250 KB |
5870 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5871 | "partial symbol information"); | |
8e19ed76 | 5872 | } |
c906108c SS |
5873 | break; |
5874 | case DW_AT_language: | |
5875 | part_die->language = DW_UNSND (&attr); | |
5876 | break; | |
5877 | case DW_AT_external: | |
5878 | part_die->is_external = DW_UNSND (&attr); | |
5879 | break; | |
5880 | case DW_AT_declaration: | |
5881 | part_die->is_declaration = DW_UNSND (&attr); | |
5882 | break; | |
5883 | case DW_AT_type: | |
5884 | part_die->has_type = 1; | |
5885 | break; | |
5886 | case DW_AT_abstract_origin: | |
5887 | case DW_AT_specification: | |
72bf9492 DJ |
5888 | case DW_AT_extension: |
5889 | part_die->has_specification = 1; | |
5890 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5891 | break; |
5892 | case DW_AT_sibling: | |
5893 | /* Ignore absolute siblings, they might point outside of | |
5894 | the current compile unit. */ | |
5895 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5896 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5897 | else |
6502dd73 DJ |
5898 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5899 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5900 | break; |
aaa75496 JB |
5901 | case DW_AT_stmt_list: |
5902 | part_die->has_stmt_list = 1; | |
5903 | part_die->line_offset = DW_UNSND (&attr); | |
5904 | break; | |
fa4028e9 JB |
5905 | case DW_AT_byte_size: |
5906 | part_die->has_byte_size = 1; | |
5907 | break; | |
68511cec CES |
5908 | case DW_AT_calling_convention: |
5909 | /* DWARF doesn't provide a way to identify a program's source-level | |
5910 | entry point. DW_AT_calling_convention attributes are only meant | |
5911 | to describe functions' calling conventions. | |
5912 | ||
5913 | However, because it's a necessary piece of information in | |
5914 | Fortran, and because DW_CC_program is the only piece of debugging | |
5915 | information whose definition refers to a 'main program' at all, | |
5916 | several compilers have begun marking Fortran main programs with | |
5917 | DW_CC_program --- even when those functions use the standard | |
5918 | calling conventions. | |
5919 | ||
5920 | So until DWARF specifies a way to provide this information and | |
5921 | compilers pick up the new representation, we'll support this | |
5922 | practice. */ | |
5923 | if (DW_UNSND (&attr) == DW_CC_program | |
5924 | && cu->language == language_fortran) | |
5925 | set_main_name (part_die->name); | |
5926 | break; | |
c906108c SS |
5927 | default: |
5928 | break; | |
5929 | } | |
5930 | } | |
5931 | ||
c906108c SS |
5932 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5933 | eliminate duplicate copies of functions and vtables and such. | |
5934 | The linker will arbitrarily choose one and discard the others. | |
5935 | The AT_*_pc values for such functions refer to local labels in | |
5936 | these sections. If the section from that file was discarded, the | |
5937 | labels are not in the output, so the relocs get a value of 0. | |
5938 | If this is a discarded function, mark the pc bounds as invalid, | |
5939 | so that GDB will ignore it. */ | |
5940 | if (has_low_pc_attr && has_high_pc_attr | |
5941 | && part_die->lowpc < part_die->highpc | |
5942 | && (part_die->lowpc != 0 | |
72dca2f5 | 5943 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 5944 | part_die->has_pc_info = 1; |
c906108c SS |
5945 | return info_ptr; |
5946 | } | |
5947 | ||
72bf9492 DJ |
5948 | /* Find a cached partial DIE at OFFSET in CU. */ |
5949 | ||
5950 | static struct partial_die_info * | |
5951 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5952 | { | |
5953 | struct partial_die_info *lookup_die = NULL; | |
5954 | struct partial_die_info part_die; | |
5955 | ||
5956 | part_die.offset = offset; | |
5957 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5958 | ||
72bf9492 DJ |
5959 | return lookup_die; |
5960 | } | |
5961 | ||
5962 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5963 | ||
5964 | static struct partial_die_info * | |
10b3939b | 5965 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5966 | { |
5afb4e99 DJ |
5967 | struct dwarf2_per_cu_data *per_cu = NULL; |
5968 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5969 | |
5970 | if (offset >= cu->header.offset | |
5971 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5972 | { |
5973 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5974 | if (pd != NULL) | |
5975 | return pd; | |
5976 | } | |
72bf9492 | 5977 | |
ae038cb0 DJ |
5978 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5979 | ||
ae038cb0 DJ |
5980 | if (per_cu->cu == NULL) |
5981 | { | |
5982 | load_comp_unit (per_cu, cu->objfile); | |
5983 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5984 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5985 | } | |
5986 | ||
5987 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5988 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5989 | ||
5990 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5991 | { | |
5992 | struct cleanup *back_to; | |
5993 | struct partial_die_info comp_unit_die; | |
5994 | struct abbrev_info *abbrev; | |
5995 | unsigned int bytes_read; | |
5996 | char *info_ptr; | |
5997 | ||
5998 | per_cu->load_all_dies = 1; | |
5999 | ||
6000 | /* Re-read the DIEs. */ | |
6001 | back_to = make_cleanup (null_cleanup, 0); | |
6002 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
6003 | { | |
6004 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
6005 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
6006 | } | |
6007 | info_ptr = per_cu->cu->header.first_die_ptr; | |
6008 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
6009 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
6010 | per_cu->cu->objfile->obfd, info_ptr, | |
6011 | per_cu->cu); | |
6012 | if (comp_unit_die.has_children) | |
6013 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
6014 | do_cleanups (back_to); | |
6015 | ||
6016 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
6017 | } | |
6018 | ||
6019 | if (pd == NULL) | |
6020 | internal_error (__FILE__, __LINE__, | |
6021 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
6022 | offset, bfd_get_filename (cu->objfile->obfd)); | |
6023 | return pd; | |
72bf9492 DJ |
6024 | } |
6025 | ||
6026 | /* Adjust PART_DIE before generating a symbol for it. This function | |
6027 | may set the is_external flag or change the DIE's name. */ | |
6028 | ||
6029 | static void | |
6030 | fixup_partial_die (struct partial_die_info *part_die, | |
6031 | struct dwarf2_cu *cu) | |
6032 | { | |
6033 | /* If we found a reference attribute and the DIE has no name, try | |
6034 | to find a name in the referred to DIE. */ | |
6035 | ||
6036 | if (part_die->name == NULL && part_die->has_specification) | |
6037 | { | |
6038 | struct partial_die_info *spec_die; | |
72bf9492 | 6039 | |
10b3939b | 6040 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 6041 | |
10b3939b | 6042 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
6043 | |
6044 | if (spec_die->name) | |
6045 | { | |
6046 | part_die->name = spec_die->name; | |
6047 | ||
6048 | /* Copy DW_AT_external attribute if it is set. */ | |
6049 | if (spec_die->is_external) | |
6050 | part_die->is_external = spec_die->is_external; | |
6051 | } | |
6052 | } | |
6053 | ||
6054 | /* Set default names for some unnamed DIEs. */ | |
6055 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
6056 | || part_die->tag == DW_TAG_class_type)) | |
6057 | part_die->name = "(anonymous class)"; | |
6058 | ||
6059 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
6060 | part_die->name = "(anonymous namespace)"; | |
6061 | ||
6062 | if (part_die->tag == DW_TAG_structure_type | |
6063 | || part_die->tag == DW_TAG_class_type | |
6064 | || part_die->tag == DW_TAG_union_type) | |
6065 | guess_structure_name (part_die, cu); | |
6066 | } | |
6067 | ||
639d11d3 DC |
6068 | /* Read the die from the .debug_info section buffer. Set DIEP to |
6069 | point to a newly allocated die with its information, except for its | |
6070 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
6071 | whether the die has children or not. */ | |
c906108c | 6072 | |
fe1b8b76 JB |
6073 | static gdb_byte * |
6074 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 6075 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
6076 | { |
6077 | unsigned int abbrev_number, bytes_read, i, offset; | |
6078 | struct abbrev_info *abbrev; | |
6079 | struct die_info *die; | |
6080 | ||
6502dd73 | 6081 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
6082 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6083 | info_ptr += bytes_read; | |
6084 | if (!abbrev_number) | |
6085 | { | |
6086 | die = dwarf_alloc_die (); | |
6087 | die->tag = 0; | |
6088 | die->abbrev = abbrev_number; | |
6089 | die->type = NULL; | |
6090 | *diep = die; | |
639d11d3 | 6091 | *has_children = 0; |
c906108c SS |
6092 | return info_ptr; |
6093 | } | |
6094 | ||
e7c27a73 | 6095 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
6096 | if (!abbrev) |
6097 | { | |
8a3fe4f8 | 6098 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 6099 | abbrev_number, |
639d11d3 | 6100 | bfd_get_filename (abfd)); |
c906108c SS |
6101 | } |
6102 | die = dwarf_alloc_die (); | |
6103 | die->offset = offset; | |
6104 | die->tag = abbrev->tag; | |
c906108c SS |
6105 | die->abbrev = abbrev_number; |
6106 | die->type = NULL; | |
6107 | ||
6108 | die->num_attrs = abbrev->num_attrs; | |
6109 | die->attrs = (struct attribute *) | |
6110 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
6111 | ||
6112 | for (i = 0; i < abbrev->num_attrs; ++i) | |
6113 | { | |
6114 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 6115 | abfd, info_ptr, cu); |
10b3939b DJ |
6116 | |
6117 | /* If this attribute is an absolute reference to a different | |
6118 | compilation unit, make sure that compilation unit is loaded | |
6119 | also. */ | |
6120 | if (die->attrs[i].form == DW_FORM_ref_addr | |
6121 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
6122 | || (DW_ADDR (&die->attrs[i]) | |
6123 | >= cu->header.offset + cu->header.length))) | |
6124 | { | |
6125 | struct dwarf2_per_cu_data *per_cu; | |
6126 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
6127 | cu->objfile); | |
6128 | ||
6129 | /* Mark the dependence relation so that we don't flush PER_CU | |
6130 | too early. */ | |
6131 | dwarf2_add_dependence (cu, per_cu); | |
6132 | ||
6133 | /* If it's already on the queue, we have nothing to do. */ | |
6134 | if (per_cu->queued) | |
6135 | continue; | |
6136 | ||
6137 | /* If the compilation unit is already loaded, just mark it as | |
6138 | used. */ | |
6139 | if (per_cu->cu != NULL) | |
6140 | { | |
6141 | per_cu->cu->last_used = 0; | |
6142 | continue; | |
6143 | } | |
6144 | ||
6145 | /* Add it to the queue. */ | |
6146 | queue_comp_unit (per_cu); | |
6147 | } | |
c906108c SS |
6148 | } |
6149 | ||
6150 | *diep = die; | |
639d11d3 | 6151 | *has_children = abbrev->has_children; |
c906108c SS |
6152 | return info_ptr; |
6153 | } | |
6154 | ||
a8329558 | 6155 | /* Read an attribute value described by an attribute form. */ |
c906108c | 6156 | |
fe1b8b76 | 6157 | static gdb_byte * |
a8329558 | 6158 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 6159 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 6160 | struct dwarf2_cu *cu) |
c906108c | 6161 | { |
e7c27a73 | 6162 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6163 | unsigned int bytes_read; |
6164 | struct dwarf_block *blk; | |
6165 | ||
a8329558 KW |
6166 | attr->form = form; |
6167 | switch (form) | |
c906108c SS |
6168 | { |
6169 | case DW_FORM_addr: | |
6170 | case DW_FORM_ref_addr: | |
e7c27a73 | 6171 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 6172 | info_ptr += bytes_read; |
c906108c SS |
6173 | break; |
6174 | case DW_FORM_block2: | |
7b5a2f43 | 6175 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6176 | blk->size = read_2_bytes (abfd, info_ptr); |
6177 | info_ptr += 2; | |
6178 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6179 | info_ptr += blk->size; | |
6180 | DW_BLOCK (attr) = blk; | |
6181 | break; | |
6182 | case DW_FORM_block4: | |
7b5a2f43 | 6183 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6184 | blk->size = read_4_bytes (abfd, info_ptr); |
6185 | info_ptr += 4; | |
6186 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6187 | info_ptr += blk->size; | |
6188 | DW_BLOCK (attr) = blk; | |
6189 | break; | |
6190 | case DW_FORM_data2: | |
6191 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
6192 | info_ptr += 2; | |
6193 | break; | |
6194 | case DW_FORM_data4: | |
6195 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
6196 | info_ptr += 4; | |
6197 | break; | |
6198 | case DW_FORM_data8: | |
6199 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
6200 | info_ptr += 8; | |
6201 | break; | |
6202 | case DW_FORM_string: | |
6203 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
6204 | info_ptr += bytes_read; | |
6205 | break; | |
4bdf3d34 JJ |
6206 | case DW_FORM_strp: |
6207 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
6208 | &bytes_read); | |
6209 | info_ptr += bytes_read; | |
6210 | break; | |
c906108c | 6211 | case DW_FORM_block: |
7b5a2f43 | 6212 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6213 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6214 | info_ptr += bytes_read; | |
6215 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6216 | info_ptr += blk->size; | |
6217 | DW_BLOCK (attr) = blk; | |
6218 | break; | |
6219 | case DW_FORM_block1: | |
7b5a2f43 | 6220 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6221 | blk->size = read_1_byte (abfd, info_ptr); |
6222 | info_ptr += 1; | |
6223 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6224 | info_ptr += blk->size; | |
6225 | DW_BLOCK (attr) = blk; | |
6226 | break; | |
6227 | case DW_FORM_data1: | |
6228 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6229 | info_ptr += 1; | |
6230 | break; | |
6231 | case DW_FORM_flag: | |
6232 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6233 | info_ptr += 1; | |
6234 | break; | |
6235 | case DW_FORM_sdata: | |
6236 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
6237 | info_ptr += bytes_read; | |
6238 | break; | |
6239 | case DW_FORM_udata: | |
6240 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6241 | info_ptr += bytes_read; | |
6242 | break; | |
6243 | case DW_FORM_ref1: | |
10b3939b | 6244 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
6245 | info_ptr += 1; |
6246 | break; | |
6247 | case DW_FORM_ref2: | |
10b3939b | 6248 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
6249 | info_ptr += 2; |
6250 | break; | |
6251 | case DW_FORM_ref4: | |
10b3939b | 6252 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
6253 | info_ptr += 4; |
6254 | break; | |
613e1657 | 6255 | case DW_FORM_ref8: |
10b3939b | 6256 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
6257 | info_ptr += 8; |
6258 | break; | |
c906108c | 6259 | case DW_FORM_ref_udata: |
10b3939b DJ |
6260 | DW_ADDR (attr) = (cu->header.offset |
6261 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
6262 | info_ptr += bytes_read; |
6263 | break; | |
c906108c | 6264 | case DW_FORM_indirect: |
a8329558 KW |
6265 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6266 | info_ptr += bytes_read; | |
e7c27a73 | 6267 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 6268 | break; |
c906108c | 6269 | default: |
8a3fe4f8 | 6270 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
6271 | dwarf_form_name (form), |
6272 | bfd_get_filename (abfd)); | |
c906108c SS |
6273 | } |
6274 | return info_ptr; | |
6275 | } | |
6276 | ||
a8329558 KW |
6277 | /* Read an attribute described by an abbreviated attribute. */ |
6278 | ||
fe1b8b76 | 6279 | static gdb_byte * |
a8329558 | 6280 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 6281 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
6282 | { |
6283 | attr->name = abbrev->name; | |
e7c27a73 | 6284 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
6285 | } |
6286 | ||
c906108c SS |
6287 | /* read dwarf information from a buffer */ |
6288 | ||
6289 | static unsigned int | |
fe1b8b76 | 6290 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6291 | { |
fe1b8b76 | 6292 | return bfd_get_8 (abfd, buf); |
c906108c SS |
6293 | } |
6294 | ||
6295 | static int | |
fe1b8b76 | 6296 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6297 | { |
fe1b8b76 | 6298 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
6299 | } |
6300 | ||
6301 | static unsigned int | |
fe1b8b76 | 6302 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6303 | { |
fe1b8b76 | 6304 | return bfd_get_16 (abfd, buf); |
c906108c SS |
6305 | } |
6306 | ||
6307 | static int | |
fe1b8b76 | 6308 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6309 | { |
fe1b8b76 | 6310 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
6311 | } |
6312 | ||
6313 | static unsigned int | |
fe1b8b76 | 6314 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6315 | { |
fe1b8b76 | 6316 | return bfd_get_32 (abfd, buf); |
c906108c SS |
6317 | } |
6318 | ||
6319 | static int | |
fe1b8b76 | 6320 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6321 | { |
fe1b8b76 | 6322 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
6323 | } |
6324 | ||
ce5d95e1 | 6325 | static unsigned long |
fe1b8b76 | 6326 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6327 | { |
fe1b8b76 | 6328 | return bfd_get_64 (abfd, buf); |
c906108c SS |
6329 | } |
6330 | ||
6331 | static CORE_ADDR | |
fe1b8b76 | 6332 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 6333 | unsigned int *bytes_read) |
c906108c | 6334 | { |
e7c27a73 | 6335 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6336 | CORE_ADDR retval = 0; |
6337 | ||
107d2387 | 6338 | if (cu_header->signed_addr_p) |
c906108c | 6339 | { |
107d2387 AC |
6340 | switch (cu_header->addr_size) |
6341 | { | |
6342 | case 2: | |
fe1b8b76 | 6343 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6344 | break; |
6345 | case 4: | |
fe1b8b76 | 6346 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6347 | break; |
6348 | case 8: | |
fe1b8b76 | 6349 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6350 | break; |
6351 | default: | |
8e65ff28 | 6352 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6353 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6354 | bfd_get_filename (abfd)); |
107d2387 AC |
6355 | } |
6356 | } | |
6357 | else | |
6358 | { | |
6359 | switch (cu_header->addr_size) | |
6360 | { | |
6361 | case 2: | |
fe1b8b76 | 6362 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6363 | break; |
6364 | case 4: | |
fe1b8b76 | 6365 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6366 | break; |
6367 | case 8: | |
fe1b8b76 | 6368 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6369 | break; |
6370 | default: | |
8e65ff28 | 6371 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6372 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6373 | bfd_get_filename (abfd)); |
107d2387 | 6374 | } |
c906108c | 6375 | } |
64367e0a | 6376 | |
107d2387 AC |
6377 | *bytes_read = cu_header->addr_size; |
6378 | return retval; | |
c906108c SS |
6379 | } |
6380 | ||
f7ef9339 | 6381 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6382 | specification allows the initial length to take up either 4 bytes |
6383 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6384 | bytes describe the length and all offsets will be 8 bytes in length | |
6385 | instead of 4. | |
6386 | ||
f7ef9339 KB |
6387 | An older, non-standard 64-bit format is also handled by this |
6388 | function. The older format in question stores the initial length | |
6389 | as an 8-byte quantity without an escape value. Lengths greater | |
6390 | than 2^32 aren't very common which means that the initial 4 bytes | |
6391 | is almost always zero. Since a length value of zero doesn't make | |
6392 | sense for the 32-bit format, this initial zero can be considered to | |
6393 | be an escape value which indicates the presence of the older 64-bit | |
6394 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6395 | greater than 4GB. If it becomes necessary to handle lengths |
6396 | somewhat larger than 4GB, we could allow other small values (such | |
6397 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6398 | escape values indicating the presence of the old format. | |
f7ef9339 | 6399 | |
917c78fc MK |
6400 | The value returned via bytes_read should be used to increment the |
6401 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6402 | |
6403 | As a side effect, this function sets the fields initial_length_size | |
6404 | and offset_size in cu_header to the values appropriate for the | |
6405 | length field. (The format of the initial length field determines | |
dd373385 | 6406 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6407 | |
6408 | [ Note: read_initial_length() and read_offset() are based on the | |
6409 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6410 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6411 | from: |
6412 | ||
f7ef9339 | 6413 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6414 | |
6415 | This document is only a draft and is subject to change. (So beware.) | |
6416 | ||
f7ef9339 | 6417 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6418 | determined empirically by examining 64-bit ELF files produced by |
6419 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6420 | |
6421 | - Kevin, July 16, 2002 | |
613e1657 KB |
6422 | ] */ |
6423 | ||
6424 | static LONGEST | |
fe1b8b76 | 6425 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6426 | unsigned int *bytes_read) |
613e1657 | 6427 | { |
fe1b8b76 | 6428 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6429 | |
dd373385 | 6430 | if (length == 0xffffffff) |
613e1657 | 6431 | { |
fe1b8b76 | 6432 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6433 | *bytes_read = 12; |
613e1657 | 6434 | } |
dd373385 | 6435 | else if (length == 0) |
f7ef9339 | 6436 | { |
dd373385 | 6437 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6438 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6439 | *bytes_read = 8; |
f7ef9339 | 6440 | } |
613e1657 KB |
6441 | else |
6442 | { | |
6443 | *bytes_read = 4; | |
613e1657 KB |
6444 | } |
6445 | ||
dd373385 EZ |
6446 | if (cu_header) |
6447 | { | |
6448 | gdb_assert (cu_header->initial_length_size == 0 | |
6449 | || cu_header->initial_length_size == 4 | |
6450 | || cu_header->initial_length_size == 8 | |
6451 | || cu_header->initial_length_size == 12); | |
6452 | ||
6453 | if (cu_header->initial_length_size != 0 | |
6454 | && cu_header->initial_length_size != *bytes_read) | |
6455 | complaint (&symfile_complaints, | |
6456 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6457 | ||
6458 | cu_header->initial_length_size = *bytes_read; | |
6459 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6460 | } | |
6461 | ||
6462 | return length; | |
613e1657 KB |
6463 | } |
6464 | ||
6465 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6466 | given by cu_header->offset_size. */ |
613e1657 KB |
6467 | |
6468 | static LONGEST | |
fe1b8b76 | 6469 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6470 | unsigned int *bytes_read) |
613e1657 KB |
6471 | { |
6472 | LONGEST retval = 0; | |
6473 | ||
6474 | switch (cu_header->offset_size) | |
6475 | { | |
6476 | case 4: | |
fe1b8b76 | 6477 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6478 | *bytes_read = 4; |
6479 | break; | |
6480 | case 8: | |
fe1b8b76 | 6481 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6482 | *bytes_read = 8; |
6483 | break; | |
6484 | default: | |
8e65ff28 | 6485 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6486 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6487 | bfd_get_filename (abfd)); |
613e1657 KB |
6488 | } |
6489 | ||
917c78fc | 6490 | return retval; |
613e1657 KB |
6491 | } |
6492 | ||
fe1b8b76 JB |
6493 | static gdb_byte * |
6494 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6495 | { |
6496 | /* If the size of a host char is 8 bits, we can return a pointer | |
6497 | to the buffer, otherwise we have to copy the data to a buffer | |
6498 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6499 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6500 | return buf; |
c906108c SS |
6501 | } |
6502 | ||
6503 | static char * | |
fe1b8b76 | 6504 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6505 | { |
6506 | /* If the size of a host char is 8 bits, we can return a pointer | |
6507 | to the string, otherwise we have to copy the string to a buffer | |
6508 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6509 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6510 | if (*buf == '\0') |
6511 | { | |
6512 | *bytes_read_ptr = 1; | |
6513 | return NULL; | |
6514 | } | |
fe1b8b76 JB |
6515 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6516 | return (char *) buf; | |
4bdf3d34 JJ |
6517 | } |
6518 | ||
6519 | static char * | |
fe1b8b76 | 6520 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6521 | const struct comp_unit_head *cu_header, |
6522 | unsigned int *bytes_read_ptr) | |
6523 | { | |
6524 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6525 | bytes_read_ptr); |
c906108c | 6526 | |
6502dd73 | 6527 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6528 | { |
8a3fe4f8 | 6529 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6530 | bfd_get_filename (abfd)); |
4bdf3d34 | 6531 | return NULL; |
c906108c | 6532 | } |
6502dd73 | 6533 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6534 | { |
8a3fe4f8 | 6535 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6536 | bfd_get_filename (abfd)); |
c906108c SS |
6537 | return NULL; |
6538 | } | |
4bdf3d34 | 6539 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6540 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6541 | return NULL; |
fe1b8b76 | 6542 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6543 | } |
6544 | ||
ce5d95e1 | 6545 | static unsigned long |
fe1b8b76 | 6546 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6547 | { |
ce5d95e1 JB |
6548 | unsigned long result; |
6549 | unsigned int num_read; | |
c906108c SS |
6550 | int i, shift; |
6551 | unsigned char byte; | |
6552 | ||
6553 | result = 0; | |
6554 | shift = 0; | |
6555 | num_read = 0; | |
6556 | i = 0; | |
6557 | while (1) | |
6558 | { | |
fe1b8b76 | 6559 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6560 | buf++; |
6561 | num_read++; | |
ce5d95e1 | 6562 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6563 | if ((byte & 128) == 0) |
6564 | { | |
6565 | break; | |
6566 | } | |
6567 | shift += 7; | |
6568 | } | |
6569 | *bytes_read_ptr = num_read; | |
6570 | return result; | |
6571 | } | |
6572 | ||
ce5d95e1 | 6573 | static long |
fe1b8b76 | 6574 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6575 | { |
ce5d95e1 | 6576 | long result; |
77e0b926 | 6577 | int i, shift, num_read; |
c906108c SS |
6578 | unsigned char byte; |
6579 | ||
6580 | result = 0; | |
6581 | shift = 0; | |
c906108c SS |
6582 | num_read = 0; |
6583 | i = 0; | |
6584 | while (1) | |
6585 | { | |
fe1b8b76 | 6586 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6587 | buf++; |
6588 | num_read++; | |
ce5d95e1 | 6589 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6590 | shift += 7; |
6591 | if ((byte & 128) == 0) | |
6592 | { | |
6593 | break; | |
6594 | } | |
6595 | } | |
77e0b926 DJ |
6596 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6597 | result |= -(((long)1) << shift); | |
c906108c SS |
6598 | *bytes_read_ptr = num_read; |
6599 | return result; | |
6600 | } | |
6601 | ||
4bb7a0a7 DJ |
6602 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6603 | ||
fe1b8b76 JB |
6604 | static gdb_byte * |
6605 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6606 | { |
6607 | int byte; | |
6608 | ||
6609 | while (1) | |
6610 | { | |
fe1b8b76 | 6611 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6612 | buf++; |
6613 | if ((byte & 128) == 0) | |
6614 | return buf; | |
6615 | } | |
6616 | } | |
6617 | ||
c906108c | 6618 | static void |
e142c38c | 6619 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6620 | { |
6621 | switch (lang) | |
6622 | { | |
6623 | case DW_LANG_C89: | |
6624 | case DW_LANG_C: | |
e142c38c | 6625 | cu->language = language_c; |
c906108c SS |
6626 | break; |
6627 | case DW_LANG_C_plus_plus: | |
e142c38c | 6628 | cu->language = language_cplus; |
c906108c SS |
6629 | break; |
6630 | case DW_LANG_Fortran77: | |
6631 | case DW_LANG_Fortran90: | |
b21b22e0 | 6632 | case DW_LANG_Fortran95: |
e142c38c | 6633 | cu->language = language_fortran; |
c906108c SS |
6634 | break; |
6635 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6636 | cu->language = language_asm; |
c906108c | 6637 | break; |
bebd888e | 6638 | case DW_LANG_Java: |
e142c38c | 6639 | cu->language = language_java; |
bebd888e | 6640 | break; |
c906108c | 6641 | case DW_LANG_Ada83: |
8aaf0b47 | 6642 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6643 | cu->language = language_ada; |
6644 | break; | |
72019c9c GM |
6645 | case DW_LANG_Modula2: |
6646 | cu->language = language_m2; | |
6647 | break; | |
fe8e67fd PM |
6648 | case DW_LANG_Pascal83: |
6649 | cu->language = language_pascal; | |
6650 | break; | |
22566fbd DJ |
6651 | case DW_LANG_ObjC: |
6652 | cu->language = language_objc; | |
6653 | break; | |
c906108c SS |
6654 | case DW_LANG_Cobol74: |
6655 | case DW_LANG_Cobol85: | |
c906108c | 6656 | default: |
e142c38c | 6657 | cu->language = language_minimal; |
c906108c SS |
6658 | break; |
6659 | } | |
e142c38c | 6660 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6661 | } |
6662 | ||
6663 | /* Return the named attribute or NULL if not there. */ | |
6664 | ||
6665 | static struct attribute * | |
e142c38c | 6666 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6667 | { |
6668 | unsigned int i; | |
6669 | struct attribute *spec = NULL; | |
6670 | ||
6671 | for (i = 0; i < die->num_attrs; ++i) | |
6672 | { | |
6673 | if (die->attrs[i].name == name) | |
10b3939b | 6674 | return &die->attrs[i]; |
c906108c SS |
6675 | if (die->attrs[i].name == DW_AT_specification |
6676 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6677 | spec = &die->attrs[i]; | |
6678 | } | |
c906108c | 6679 | |
10b3939b DJ |
6680 | if (spec) |
6681 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6682 | |
c906108c SS |
6683 | return NULL; |
6684 | } | |
6685 | ||
05cf31d1 JB |
6686 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6687 | and holds a non-zero value. This function should only be used for | |
6688 | DW_FORM_flag attributes. */ | |
6689 | ||
6690 | static int | |
6691 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6692 | { | |
6693 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6694 | ||
6695 | return (attr && DW_UNSND (attr)); | |
6696 | } | |
6697 | ||
3ca72b44 | 6698 | static int |
e142c38c | 6699 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6700 | { |
05cf31d1 JB |
6701 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6702 | which value is non-zero. However, we have to be careful with | |
6703 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6704 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6705 | end up accidently finding a declaration attribute that belongs | |
6706 | to a different DIE referenced by the specification attribute, | |
6707 | even though the given DIE does not have a declaration attribute. */ | |
6708 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6709 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6710 | } |
6711 | ||
63d06c5c DC |
6712 | /* Return the die giving the specification for DIE, if there is |
6713 | one. */ | |
6714 | ||
6715 | static struct die_info * | |
e142c38c | 6716 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6717 | { |
e142c38c | 6718 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6719 | |
6720 | if (spec_attr == NULL) | |
6721 | return NULL; | |
6722 | else | |
10b3939b | 6723 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6724 | } |
c906108c | 6725 | |
debd256d JB |
6726 | /* Free the line_header structure *LH, and any arrays and strings it |
6727 | refers to. */ | |
6728 | static void | |
6729 | free_line_header (struct line_header *lh) | |
6730 | { | |
6731 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6732 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6733 | |
6734 | /* Remember that all the lh->file_names[i].name pointers are | |
6735 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6736 | if (lh->file_names) | |
a8bc7b56 | 6737 | xfree (lh->file_names); |
debd256d JB |
6738 | |
6739 | /* Similarly for the include directory names. */ | |
6740 | if (lh->include_dirs) | |
a8bc7b56 | 6741 | xfree (lh->include_dirs); |
debd256d | 6742 | |
a8bc7b56 | 6743 | xfree (lh); |
debd256d JB |
6744 | } |
6745 | ||
6746 | ||
6747 | /* Add an entry to LH's include directory table. */ | |
6748 | static void | |
6749 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6750 | { |
debd256d JB |
6751 | /* Grow the array if necessary. */ |
6752 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6753 | { |
debd256d JB |
6754 | lh->include_dirs_size = 1; /* for testing */ |
6755 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6756 | * sizeof (*lh->include_dirs)); | |
6757 | } | |
6758 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6759 | { | |
6760 | lh->include_dirs_size *= 2; | |
6761 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6762 | (lh->include_dirs_size | |
6763 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6764 | } |
c906108c | 6765 | |
debd256d JB |
6766 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6767 | } | |
6768 | ||
6769 | ||
6770 | /* Add an entry to LH's file name table. */ | |
6771 | static void | |
6772 | add_file_name (struct line_header *lh, | |
6773 | char *name, | |
6774 | unsigned int dir_index, | |
6775 | unsigned int mod_time, | |
6776 | unsigned int length) | |
6777 | { | |
6778 | struct file_entry *fe; | |
6779 | ||
6780 | /* Grow the array if necessary. */ | |
6781 | if (lh->file_names_size == 0) | |
6782 | { | |
6783 | lh->file_names_size = 1; /* for testing */ | |
6784 | lh->file_names = xmalloc (lh->file_names_size | |
6785 | * sizeof (*lh->file_names)); | |
6786 | } | |
6787 | else if (lh->num_file_names >= lh->file_names_size) | |
6788 | { | |
6789 | lh->file_names_size *= 2; | |
6790 | lh->file_names = xrealloc (lh->file_names, | |
6791 | (lh->file_names_size | |
6792 | * sizeof (*lh->file_names))); | |
6793 | } | |
6794 | ||
6795 | fe = &lh->file_names[lh->num_file_names++]; | |
6796 | fe->name = name; | |
6797 | fe->dir_index = dir_index; | |
6798 | fe->mod_time = mod_time; | |
6799 | fe->length = length; | |
aaa75496 | 6800 | fe->included_p = 0; |
cb1df416 | 6801 | fe->symtab = NULL; |
debd256d JB |
6802 | } |
6803 | ||
6804 | ||
6805 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6806 | .debug_line, according to the endianness of ABFD. Return a pointer |
6807 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6808 | |
6809 | NOTE: the strings in the include directory and file name tables of | |
6810 | the returned object point into debug_line_buffer, and must not be | |
6811 | freed. */ | |
6812 | static struct line_header * | |
6813 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6814 | struct dwarf2_cu *cu) |
debd256d JB |
6815 | { |
6816 | struct cleanup *back_to; | |
6817 | struct line_header *lh; | |
fe1b8b76 | 6818 | gdb_byte *line_ptr; |
891d2f0b | 6819 | unsigned int bytes_read; |
debd256d JB |
6820 | int i; |
6821 | char *cur_dir, *cur_file; | |
6822 | ||
6502dd73 | 6823 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6824 | { |
e2e0b3e5 | 6825 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6826 | return 0; |
6827 | } | |
6828 | ||
a738430d MK |
6829 | /* Make sure that at least there's room for the total_length field. |
6830 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6831 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6832 | { |
4d3c2250 | 6833 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6834 | return 0; |
6835 | } | |
6836 | ||
6837 | lh = xmalloc (sizeof (*lh)); | |
6838 | memset (lh, 0, sizeof (*lh)); | |
6839 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6840 | (void *) lh); | |
6841 | ||
6502dd73 | 6842 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6843 | |
a738430d | 6844 | /* Read in the header. */ |
dd373385 EZ |
6845 | lh->total_length = |
6846 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6847 | line_ptr += bytes_read; |
6502dd73 DJ |
6848 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6849 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6850 | { |
4d3c2250 | 6851 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6852 | return 0; |
6853 | } | |
6854 | lh->statement_program_end = line_ptr + lh->total_length; | |
6855 | lh->version = read_2_bytes (abfd, line_ptr); | |
6856 | line_ptr += 2; | |
e7c27a73 | 6857 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6858 | line_ptr += bytes_read; |
6859 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6860 | line_ptr += 1; | |
6861 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6862 | line_ptr += 1; | |
6863 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6864 | line_ptr += 1; | |
6865 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6866 | line_ptr += 1; | |
6867 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6868 | line_ptr += 1; | |
6869 | lh->standard_opcode_lengths | |
fe1b8b76 | 6870 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6871 | |
6872 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6873 | for (i = 1; i < lh->opcode_base; ++i) | |
6874 | { | |
6875 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6876 | line_ptr += 1; | |
6877 | } | |
6878 | ||
a738430d | 6879 | /* Read directory table. */ |
debd256d JB |
6880 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6881 | { | |
6882 | line_ptr += bytes_read; | |
6883 | add_include_dir (lh, cur_dir); | |
6884 | } | |
6885 | line_ptr += bytes_read; | |
6886 | ||
a738430d | 6887 | /* Read file name table. */ |
debd256d JB |
6888 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6889 | { | |
6890 | unsigned int dir_index, mod_time, length; | |
6891 | ||
6892 | line_ptr += bytes_read; | |
6893 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6894 | line_ptr += bytes_read; | |
6895 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6896 | line_ptr += bytes_read; | |
6897 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6898 | line_ptr += bytes_read; | |
6899 | ||
6900 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6901 | } | |
6902 | line_ptr += bytes_read; | |
6903 | lh->statement_program_start = line_ptr; | |
6904 | ||
6502dd73 DJ |
6905 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6906 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6907 | complaint (&symfile_complaints, |
e2e0b3e5 | 6908 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6909 | |
6910 | discard_cleanups (back_to); | |
6911 | return lh; | |
6912 | } | |
c906108c | 6913 | |
5fb290d7 DJ |
6914 | /* This function exists to work around a bug in certain compilers |
6915 | (particularly GCC 2.95), in which the first line number marker of a | |
6916 | function does not show up until after the prologue, right before | |
6917 | the second line number marker. This function shifts ADDRESS down | |
6918 | to the beginning of the function if necessary, and is called on | |
6919 | addresses passed to record_line. */ | |
6920 | ||
6921 | static CORE_ADDR | |
e142c38c | 6922 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6923 | { |
6924 | struct function_range *fn; | |
6925 | ||
6926 | /* Find the function_range containing address. */ | |
e142c38c | 6927 | if (!cu->first_fn) |
5fb290d7 DJ |
6928 | return address; |
6929 | ||
e142c38c DJ |
6930 | if (!cu->cached_fn) |
6931 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6932 | |
e142c38c | 6933 | fn = cu->cached_fn; |
5fb290d7 DJ |
6934 | while (fn) |
6935 | if (fn->lowpc <= address && fn->highpc > address) | |
6936 | goto found; | |
6937 | else | |
6938 | fn = fn->next; | |
6939 | ||
e142c38c DJ |
6940 | fn = cu->first_fn; |
6941 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6942 | if (fn->lowpc <= address && fn->highpc > address) |
6943 | goto found; | |
6944 | else | |
6945 | fn = fn->next; | |
6946 | ||
6947 | return address; | |
6948 | ||
6949 | found: | |
6950 | if (fn->seen_line) | |
6951 | return address; | |
6952 | if (address != fn->lowpc) | |
4d3c2250 | 6953 | complaint (&symfile_complaints, |
e2e0b3e5 | 6954 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6955 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6956 | fn->seen_line = 1; |
6957 | return fn->lowpc; | |
6958 | } | |
6959 | ||
aaa75496 JB |
6960 | /* Decode the Line Number Program (LNP) for the given line_header |
6961 | structure and CU. The actual information extracted and the type | |
6962 | of structures created from the LNP depends on the value of PST. | |
6963 | ||
6964 | 1. If PST is NULL, then this procedure uses the data from the program | |
6965 | to create all necessary symbol tables, and their linetables. | |
6966 | The compilation directory of the file is passed in COMP_DIR, | |
6967 | and must not be NULL. | |
6968 | ||
6969 | 2. If PST is not NULL, this procedure reads the program to determine | |
6970 | the list of files included by the unit represented by PST, and | |
6971 | builds all the associated partial symbol tables. In this case, | |
6972 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6973 | is not used to compute the full name of the symtab, and therefore | |
6974 | omitting it when building the partial symtab does not introduce | |
6975 | the potential for inconsistency - a partial symtab and its associated | |
6976 | symbtab having a different fullname -). */ | |
debd256d | 6977 | |
c906108c | 6978 | static void |
debd256d | 6979 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6980 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6981 | { |
a8c50c1f | 6982 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 6983 | gdb_byte *line_end; |
a8c50c1f | 6984 | unsigned int bytes_read, extended_len; |
c906108c | 6985 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6986 | CORE_ADDR baseaddr; |
6987 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6988 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 6989 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
6990 | |
6991 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6992 | |
debd256d JB |
6993 | line_ptr = lh->statement_program_start; |
6994 | line_end = lh->statement_program_end; | |
c906108c SS |
6995 | |
6996 | /* Read the statement sequences until there's nothing left. */ | |
6997 | while (line_ptr < line_end) | |
6998 | { | |
6999 | /* state machine registers */ | |
7000 | CORE_ADDR address = 0; | |
7001 | unsigned int file = 1; | |
7002 | unsigned int line = 1; | |
7003 | unsigned int column = 0; | |
debd256d | 7004 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
7005 | int basic_block = 0; |
7006 | int end_sequence = 0; | |
7007 | ||
aaa75496 | 7008 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 7009 | { |
aaa75496 | 7010 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
7011 | /* lh->include_dirs and lh->file_names are 0-based, but the |
7012 | directory and file name numbers in the statement program | |
7013 | are 1-based. */ | |
7014 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 7015 | char *dir = NULL; |
a738430d | 7016 | |
debd256d JB |
7017 | if (fe->dir_index) |
7018 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
7019 | |
7020 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
7021 | } |
7022 | ||
a738430d | 7023 | /* Decode the table. */ |
c5aa993b | 7024 | while (!end_sequence) |
c906108c SS |
7025 | { |
7026 | op_code = read_1_byte (abfd, line_ptr); | |
7027 | line_ptr += 1; | |
9aa1fe7e | 7028 | |
debd256d | 7029 | if (op_code >= lh->opcode_base) |
a738430d MK |
7030 | { |
7031 | /* Special operand. */ | |
debd256d JB |
7032 | adj_opcode = op_code - lh->opcode_base; |
7033 | address += (adj_opcode / lh->line_range) | |
7034 | * lh->minimum_instruction_length; | |
7035 | line += lh->line_base + (adj_opcode % lh->line_range); | |
25e43795 DJ |
7036 | if (lh->num_file_names < file) |
7037 | dwarf2_debug_line_missing_file_complaint (); | |
7038 | else | |
7039 | { | |
7040 | lh->file_names[file - 1].included_p = 1; | |
7041 | if (!decode_for_pst_p) | |
7042 | { | |
7043 | if (last_subfile != current_subfile) | |
7044 | { | |
7045 | if (last_subfile) | |
7046 | record_line (last_subfile, 0, address); | |
7047 | last_subfile = current_subfile; | |
7048 | } | |
7049 | /* Append row to matrix using current values. */ | |
7050 | record_line (current_subfile, line, | |
7051 | check_cu_functions (address, cu)); | |
366da635 | 7052 | } |
25e43795 | 7053 | } |
9aa1fe7e GK |
7054 | basic_block = 1; |
7055 | } | |
7056 | else switch (op_code) | |
c906108c SS |
7057 | { |
7058 | case DW_LNS_extended_op: | |
a8c50c1f | 7059 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 7060 | line_ptr += bytes_read; |
a8c50c1f | 7061 | extended_end = line_ptr + extended_len; |
c906108c SS |
7062 | extended_op = read_1_byte (abfd, line_ptr); |
7063 | line_ptr += 1; | |
7064 | switch (extended_op) | |
7065 | { | |
7066 | case DW_LNE_end_sequence: | |
7067 | end_sequence = 1; | |
25e43795 DJ |
7068 | |
7069 | if (lh->num_file_names < file) | |
7070 | dwarf2_debug_line_missing_file_complaint (); | |
7071 | else | |
7072 | { | |
7073 | lh->file_names[file - 1].included_p = 1; | |
7074 | if (!decode_for_pst_p) | |
7075 | record_line (current_subfile, 0, address); | |
7076 | } | |
c906108c SS |
7077 | break; |
7078 | case DW_LNE_set_address: | |
e7c27a73 | 7079 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
7080 | line_ptr += bytes_read; |
7081 | address += baseaddr; | |
c906108c SS |
7082 | break; |
7083 | case DW_LNE_define_file: | |
debd256d JB |
7084 | { |
7085 | char *cur_file; | |
7086 | unsigned int dir_index, mod_time, length; | |
7087 | ||
7088 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
7089 | line_ptr += bytes_read; | |
7090 | dir_index = | |
7091 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7092 | line_ptr += bytes_read; | |
7093 | mod_time = | |
7094 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7095 | line_ptr += bytes_read; | |
7096 | length = | |
7097 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7098 | line_ptr += bytes_read; | |
7099 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7100 | } | |
c906108c SS |
7101 | break; |
7102 | default: | |
4d3c2250 | 7103 | complaint (&symfile_complaints, |
e2e0b3e5 | 7104 | _("mangled .debug_line section")); |
debd256d | 7105 | return; |
c906108c | 7106 | } |
a8c50c1f DJ |
7107 | /* Make sure that we parsed the extended op correctly. If e.g. |
7108 | we expected a different address size than the producer used, | |
7109 | we may have read the wrong number of bytes. */ | |
7110 | if (line_ptr != extended_end) | |
7111 | { | |
7112 | complaint (&symfile_complaints, | |
7113 | _("mangled .debug_line section")); | |
7114 | return; | |
7115 | } | |
c906108c SS |
7116 | break; |
7117 | case DW_LNS_copy: | |
25e43795 DJ |
7118 | if (lh->num_file_names < file) |
7119 | dwarf2_debug_line_missing_file_complaint (); | |
7120 | else | |
366da635 | 7121 | { |
25e43795 DJ |
7122 | lh->file_names[file - 1].included_p = 1; |
7123 | if (!decode_for_pst_p) | |
7124 | { | |
7125 | if (last_subfile != current_subfile) | |
7126 | { | |
7127 | if (last_subfile) | |
7128 | record_line (last_subfile, 0, address); | |
7129 | last_subfile = current_subfile; | |
7130 | } | |
7131 | record_line (current_subfile, line, | |
7132 | check_cu_functions (address, cu)); | |
7133 | } | |
366da635 | 7134 | } |
c906108c SS |
7135 | basic_block = 0; |
7136 | break; | |
7137 | case DW_LNS_advance_pc: | |
debd256d | 7138 | address += lh->minimum_instruction_length |
c906108c SS |
7139 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7140 | line_ptr += bytes_read; | |
7141 | break; | |
7142 | case DW_LNS_advance_line: | |
7143 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
7144 | line_ptr += bytes_read; | |
7145 | break; | |
7146 | case DW_LNS_set_file: | |
debd256d | 7147 | { |
a738430d MK |
7148 | /* The arrays lh->include_dirs and lh->file_names are |
7149 | 0-based, but the directory and file name numbers in | |
7150 | the statement program are 1-based. */ | |
debd256d | 7151 | struct file_entry *fe; |
4f1520fb | 7152 | char *dir = NULL; |
a738430d | 7153 | |
debd256d JB |
7154 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7155 | line_ptr += bytes_read; | |
25e43795 DJ |
7156 | if (lh->num_file_names < file) |
7157 | dwarf2_debug_line_missing_file_complaint (); | |
7158 | else | |
7159 | { | |
7160 | fe = &lh->file_names[file - 1]; | |
7161 | if (fe->dir_index) | |
7162 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7163 | if (!decode_for_pst_p) | |
7164 | { | |
7165 | last_subfile = current_subfile; | |
7166 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7167 | } | |
7168 | } | |
debd256d | 7169 | } |
c906108c SS |
7170 | break; |
7171 | case DW_LNS_set_column: | |
7172 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7173 | line_ptr += bytes_read; | |
7174 | break; | |
7175 | case DW_LNS_negate_stmt: | |
7176 | is_stmt = (!is_stmt); | |
7177 | break; | |
7178 | case DW_LNS_set_basic_block: | |
7179 | basic_block = 1; | |
7180 | break; | |
c2c6d25f JM |
7181 | /* Add to the address register of the state machine the |
7182 | address increment value corresponding to special opcode | |
a738430d MK |
7183 | 255. I.e., this value is scaled by the minimum |
7184 | instruction length since special opcode 255 would have | |
7185 | scaled the the increment. */ | |
c906108c | 7186 | case DW_LNS_const_add_pc: |
debd256d JB |
7187 | address += (lh->minimum_instruction_length |
7188 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
7189 | break; |
7190 | case DW_LNS_fixed_advance_pc: | |
7191 | address += read_2_bytes (abfd, line_ptr); | |
7192 | line_ptr += 2; | |
7193 | break; | |
9aa1fe7e | 7194 | default: |
a738430d MK |
7195 | { |
7196 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 7197 | int i; |
a738430d | 7198 | |
debd256d | 7199 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
7200 | { |
7201 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7202 | line_ptr += bytes_read; | |
7203 | } | |
7204 | } | |
c906108c SS |
7205 | } |
7206 | } | |
7207 | } | |
aaa75496 JB |
7208 | |
7209 | if (decode_for_pst_p) | |
7210 | { | |
7211 | int file_index; | |
7212 | ||
7213 | /* Now that we're done scanning the Line Header Program, we can | |
7214 | create the psymtab of each included file. */ | |
7215 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
7216 | if (lh->file_names[file_index].included_p == 1) | |
7217 | { | |
5b5464ad JB |
7218 | const struct file_entry fe = lh->file_names [file_index]; |
7219 | char *include_name = fe.name; | |
7220 | char *dir_name = NULL; | |
7221 | char *pst_filename = pst->filename; | |
7222 | ||
7223 | if (fe.dir_index) | |
7224 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
7225 | ||
7226 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
7227 | { | |
1754f103 MK |
7228 | include_name = concat (dir_name, SLASH_STRING, |
7229 | include_name, (char *)NULL); | |
5b5464ad JB |
7230 | make_cleanup (xfree, include_name); |
7231 | } | |
7232 | ||
7233 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
7234 | { | |
1754f103 MK |
7235 | pst_filename = concat (pst->dirname, SLASH_STRING, |
7236 | pst_filename, (char *)NULL); | |
5b5464ad JB |
7237 | make_cleanup (xfree, pst_filename); |
7238 | } | |
7239 | ||
7240 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
7241 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
7242 | } | |
7243 | } | |
cb1df416 DJ |
7244 | else |
7245 | { | |
7246 | /* Make sure a symtab is created for every file, even files | |
7247 | which contain only variables (i.e. no code with associated | |
7248 | line numbers). */ | |
7249 | ||
7250 | int i; | |
7251 | struct file_entry *fe; | |
7252 | ||
7253 | for (i = 0; i < lh->num_file_names; i++) | |
7254 | { | |
7255 | char *dir = NULL; | |
7256 | fe = &lh->file_names[i]; | |
7257 | if (fe->dir_index) | |
7258 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7259 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7260 | ||
7261 | /* Skip the main file; we don't need it, and it must be | |
7262 | allocated last, so that it will show up before the | |
7263 | non-primary symtabs in the objfile's symtab list. */ | |
7264 | if (current_subfile == first_subfile) | |
7265 | continue; | |
7266 | ||
7267 | if (current_subfile->symtab == NULL) | |
7268 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7269 | cu->objfile); | |
7270 | fe->symtab = current_subfile->symtab; | |
7271 | } | |
7272 | } | |
c906108c SS |
7273 | } |
7274 | ||
7275 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
7276 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
7277 | or NULL if not known. COMP_DIR is the compilation directory for the |
7278 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
7279 | This routine tries to keep line numbers from identical absolute and |
7280 | relative file names in a common subfile. | |
7281 | ||
7282 | Using the `list' example from the GDB testsuite, which resides in | |
7283 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
7284 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
7285 | ||
c5aa993b JM |
7286 | DW_AT_name: /srcdir/list0.c |
7287 | DW_AT_comp_dir: /compdir | |
357e46e7 | 7288 | files.files[0].name: list0.h |
c5aa993b | 7289 | files.files[0].dir: /srcdir |
357e46e7 | 7290 | files.files[1].name: list0.c |
c5aa993b | 7291 | files.files[1].dir: /srcdir |
c906108c SS |
7292 | |
7293 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
7294 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
7295 | start_subfile will ensure that this happens provided that we pass the | |
7296 | concatenation of files.files[1].dir and files.files[1].name as the | |
7297 | subfile's name. */ | |
c906108c SS |
7298 | |
7299 | static void | |
4f1520fb | 7300 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 7301 | { |
4f1520fb FR |
7302 | char *fullname; |
7303 | ||
7304 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
7305 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
7306 | second argument to start_subfile. To be consistent, we do the | |
7307 | same here. In order not to lose the line information directory, | |
7308 | we concatenate it to the filename when it makes sense. | |
7309 | Note that the Dwarf3 standard says (speaking of filenames in line | |
7310 | information): ``The directory index is ignored for file names | |
7311 | that represent full path names''. Thus ignoring dirname in the | |
7312 | `else' branch below isn't an issue. */ | |
c906108c | 7313 | |
d5166ae1 | 7314 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
7315 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
7316 | else | |
7317 | fullname = filename; | |
c906108c | 7318 | |
4f1520fb FR |
7319 | start_subfile (fullname, comp_dir); |
7320 | ||
7321 | if (fullname != filename) | |
7322 | xfree (fullname); | |
c906108c SS |
7323 | } |
7324 | ||
4c2df51b DJ |
7325 | static void |
7326 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7327 | struct dwarf2_cu *cu) |
4c2df51b | 7328 | { |
e7c27a73 DJ |
7329 | struct objfile *objfile = cu->objfile; |
7330 | struct comp_unit_head *cu_header = &cu->header; | |
7331 | ||
4c2df51b DJ |
7332 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
7333 | code here to turn a symbol with DW_AT_external and a | |
7334 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
7335 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
7336 | with some versions of binutils) where shared libraries could have | |
7337 | relocations against symbols in their debug information - the | |
7338 | minimal symbol would have the right address, but the debug info | |
7339 | would not. It's no longer necessary, because we will explicitly | |
7340 | apply relocations when we read in the debug information now. */ | |
7341 | ||
7342 | /* A DW_AT_location attribute with no contents indicates that a | |
7343 | variable has been optimized away. */ | |
7344 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
7345 | { | |
7346 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
7347 | return; | |
7348 | } | |
7349 | ||
7350 | /* Handle one degenerate form of location expression specially, to | |
7351 | preserve GDB's previous behavior when section offsets are | |
7352 | specified. If this is just a DW_OP_addr then mark this symbol | |
7353 | as LOC_STATIC. */ | |
7354 | ||
7355 | if (attr_form_is_block (attr) | |
7356 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
7357 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
7358 | { | |
891d2f0b | 7359 | unsigned int dummy; |
4c2df51b DJ |
7360 | |
7361 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 7362 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
7363 | fixup_symbol_section (sym, objfile); |
7364 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
7365 | SYMBOL_SECTION (sym)); | |
7366 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
7367 | return; | |
7368 | } | |
7369 | ||
7370 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
7371 | expression evaluator, and use LOC_COMPUTED only when necessary | |
7372 | (i.e. when the value of a register or memory location is | |
7373 | referenced, or a thread-local block, etc.). Then again, it might | |
7374 | not be worthwhile. I'm assuming that it isn't unless performance | |
7375 | or memory numbers show me otherwise. */ | |
7376 | ||
e7c27a73 | 7377 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
7378 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
7379 | } | |
7380 | ||
c906108c SS |
7381 | /* Given a pointer to a DWARF information entry, figure out if we need |
7382 | to make a symbol table entry for it, and if so, create a new entry | |
7383 | and return a pointer to it. | |
7384 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 7385 | used the passed type. */ |
c906108c SS |
7386 | |
7387 | static struct symbol * | |
e7c27a73 | 7388 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 7389 | { |
e7c27a73 | 7390 | struct objfile *objfile = cu->objfile; |
5e2b427d | 7391 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7392 | struct symbol *sym = NULL; |
7393 | char *name; | |
7394 | struct attribute *attr = NULL; | |
7395 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
7396 | CORE_ADDR baseaddr; |
7397 | ||
7398 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7399 | |
5c4e30ca | 7400 | if (die->tag != DW_TAG_namespace) |
e142c38c | 7401 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7402 | else |
7403 | name = TYPE_NAME (type); | |
7404 | ||
c906108c SS |
7405 | if (name) |
7406 | { | |
4a146b47 | 7407 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7408 | sizeof (struct symbol)); |
7409 | OBJSTAT (objfile, n_syms++); | |
7410 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7411 | |
7412 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7413 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7414 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7415 | |
7416 | /* Default assumptions. | |
c5aa993b | 7417 | Use the passed type or decode it from the die. */ |
176620f1 | 7418 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7419 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7420 | if (type != NULL) |
7421 | SYMBOL_TYPE (sym) = type; | |
7422 | else | |
e7c27a73 | 7423 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7424 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7425 | if (attr) |
7426 | { | |
7427 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7428 | } | |
cb1df416 DJ |
7429 | |
7430 | attr = dwarf2_attr (die, DW_AT_decl_file, cu); | |
7431 | if (attr) | |
7432 | { | |
7433 | int file_index = DW_UNSND (attr); | |
7434 | if (cu->line_header == NULL | |
7435 | || file_index > cu->line_header->num_file_names) | |
7436 | complaint (&symfile_complaints, | |
7437 | _("file index out of range")); | |
1c3d648d | 7438 | else if (file_index > 0) |
cb1df416 DJ |
7439 | { |
7440 | struct file_entry *fe; | |
7441 | fe = &cu->line_header->file_names[file_index - 1]; | |
7442 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
7443 | } | |
7444 | } | |
7445 | ||
c906108c SS |
7446 | switch (die->tag) |
7447 | { | |
7448 | case DW_TAG_label: | |
e142c38c | 7449 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7450 | if (attr) |
7451 | { | |
7452 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7453 | } | |
7454 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7455 | break; | |
7456 | case DW_TAG_subprogram: | |
7457 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7458 | finish_block. */ | |
7459 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7460 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
7461 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
7462 | || cu->language == language_ada) | |
c906108c | 7463 | { |
2cfa0c8d JB |
7464 | /* Subprograms marked external are stored as a global symbol. |
7465 | Ada subprograms, whether marked external or not, are always | |
7466 | stored as a global symbol, because we want to be able to | |
7467 | access them globally. For instance, we want to be able | |
7468 | to break on a nested subprogram without having to | |
7469 | specify the context. */ | |
c906108c SS |
7470 | add_symbol_to_list (sym, &global_symbols); |
7471 | } | |
7472 | else | |
7473 | { | |
e142c38c | 7474 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7475 | } |
7476 | break; | |
7477 | case DW_TAG_variable: | |
7478 | /* Compilation with minimal debug info may result in variables | |
7479 | with missing type entries. Change the misleading `void' type | |
7480 | to something sensible. */ | |
7481 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 7482 | SYMBOL_TYPE (sym) |
5e2b427d | 7483 | = builtin_type (gdbarch)->nodebug_data_symbol; |
64c50499 | 7484 | |
e142c38c | 7485 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7486 | if (attr) |
7487 | { | |
e7c27a73 | 7488 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7489 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7490 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7491 | add_symbol_to_list (sym, &global_symbols); | |
7492 | else | |
e142c38c | 7493 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7494 | break; |
7495 | } | |
e142c38c | 7496 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7497 | if (attr) |
7498 | { | |
e7c27a73 | 7499 | var_decode_location (attr, sym, cu); |
e142c38c | 7500 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7501 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7502 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7503 | else |
e142c38c | 7504 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7505 | } |
7506 | else | |
7507 | { | |
7508 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7509 | If it is an external symbol and we have type information |
7510 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7511 | The address of the variable will then be determined from | |
7512 | the minimal symbol table whenever the variable is | |
7513 | referenced. */ | |
e142c38c | 7514 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7515 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7516 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7517 | { |
7518 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7519 | add_symbol_to_list (sym, &global_symbols); | |
7520 | } | |
7521 | } | |
7522 | break; | |
7523 | case DW_TAG_formal_parameter: | |
e142c38c | 7524 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7525 | if (attr) |
7526 | { | |
e7c27a73 | 7527 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
7528 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
7529 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
7530 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 7531 | } |
e142c38c | 7532 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7533 | if (attr) |
7534 | { | |
e7c27a73 | 7535 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7536 | } |
e142c38c | 7537 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7538 | break; |
7539 | case DW_TAG_unspecified_parameters: | |
7540 | /* From varargs functions; gdb doesn't seem to have any | |
7541 | interest in this information, so just ignore it for now. | |
7542 | (FIXME?) */ | |
7543 | break; | |
7544 | case DW_TAG_class_type: | |
680b30c7 | 7545 | case DW_TAG_interface_type: |
c906108c SS |
7546 | case DW_TAG_structure_type: |
7547 | case DW_TAG_union_type: | |
72019c9c | 7548 | case DW_TAG_set_type: |
c906108c SS |
7549 | case DW_TAG_enumeration_type: |
7550 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7551 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7552 | |
63d06c5c DC |
7553 | /* Make sure that the symbol includes appropriate enclosing |
7554 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7555 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7556 | the type. */ |
7557 | ||
987504bb JJ |
7558 | if (cu->language == language_cplus |
7559 | || cu->language == language_java) | |
c906108c | 7560 | { |
63d06c5c DC |
7561 | struct type *type = SYMBOL_TYPE (sym); |
7562 | ||
7563 | if (TYPE_TAG_NAME (type) != NULL) | |
7564 | { | |
7565 | /* FIXME: carlton/2003-11-10: Should this use | |
7566 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7567 | arises further down in this function.) */ |
7568 | /* The type's name is already allocated along with | |
7569 | this objfile, so we don't need to duplicate it | |
7570 | for the symbol. */ | |
7571 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7572 | } |
c906108c | 7573 | } |
63d06c5c DC |
7574 | |
7575 | { | |
987504bb | 7576 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7577 | really ever be static objects: otherwise, if you try |
7578 | to, say, break of a class's method and you're in a file | |
7579 | which doesn't mention that class, it won't work unless | |
7580 | the check for all static symbols in lookup_symbol_aux | |
7581 | saves you. See the OtherFileClass tests in | |
7582 | gdb.c++/namespace.exp. */ | |
7583 | ||
7584 | struct pending **list_to_add; | |
7585 | ||
e142c38c | 7586 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7587 | && (cu->language == language_cplus |
7588 | || cu->language == language_java) | |
e142c38c | 7589 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7590 | |
7591 | add_symbol_to_list (sym, list_to_add); | |
7592 | ||
7593 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7594 | defines a typedef for "foo". A Java class declaration also |
7595 | defines a typedef for the class. Synthesize a typedef symbol | |
7596 | so that "ptype foo" works as expected. */ | |
7597 | if (cu->language == language_cplus | |
8c6860bb JB |
7598 | || cu->language == language_java |
7599 | || cu->language == language_ada) | |
63d06c5c DC |
7600 | { |
7601 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7602 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7603 | sizeof (struct symbol)); |
7604 | *typedef_sym = *sym; | |
7605 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7606 | /* The symbol's name is already allocated along with |
7607 | this objfile, so we don't need to duplicate it for | |
7608 | the type. */ | |
63d06c5c | 7609 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7610 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7611 | add_symbol_to_list (typedef_sym, list_to_add); |
7612 | } | |
7613 | } | |
c906108c SS |
7614 | break; |
7615 | case DW_TAG_typedef: | |
63d06c5c DC |
7616 | if (processing_has_namespace_info |
7617 | && processing_current_prefix[0] != '\0') | |
7618 | { | |
987504bb JJ |
7619 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7620 | processing_current_prefix, | |
7621 | name, cu); | |
63d06c5c DC |
7622 | } |
7623 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7624 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7625 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7626 | break; |
c906108c | 7627 | case DW_TAG_base_type: |
a02abb62 | 7628 | case DW_TAG_subrange_type: |
c906108c | 7629 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7630 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7631 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7632 | break; |
7633 | case DW_TAG_enumerator: | |
63d06c5c DC |
7634 | if (processing_has_namespace_info |
7635 | && processing_current_prefix[0] != '\0') | |
7636 | { | |
987504bb JJ |
7637 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7638 | processing_current_prefix, | |
7639 | name, cu); | |
63d06c5c | 7640 | } |
e142c38c | 7641 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7642 | if (attr) |
7643 | { | |
e7c27a73 | 7644 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7645 | } |
63d06c5c DC |
7646 | { |
7647 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7648 | DW_TAG_class_type, etc. block. */ | |
7649 | ||
7650 | struct pending **list_to_add; | |
7651 | ||
e142c38c | 7652 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7653 | && (cu->language == language_cplus |
7654 | || cu->language == language_java) | |
e142c38c | 7655 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7656 | |
7657 | add_symbol_to_list (sym, list_to_add); | |
7658 | } | |
c906108c | 7659 | break; |
5c4e30ca DC |
7660 | case DW_TAG_namespace: |
7661 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7662 | add_symbol_to_list (sym, &global_symbols); | |
7663 | break; | |
c906108c SS |
7664 | default: |
7665 | /* Not a tag we recognize. Hopefully we aren't processing | |
7666 | trash data, but since we must specifically ignore things | |
7667 | we don't recognize, there is nothing else we should do at | |
7668 | this point. */ | |
e2e0b3e5 | 7669 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7670 | dwarf_tag_name (die->tag)); |
c906108c SS |
7671 | break; |
7672 | } | |
7673 | } | |
7674 | return (sym); | |
7675 | } | |
7676 | ||
7677 | /* Copy constant value from an attribute to a symbol. */ | |
7678 | ||
7679 | static void | |
107d2387 | 7680 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7681 | struct dwarf2_cu *cu) |
c906108c | 7682 | { |
e7c27a73 DJ |
7683 | struct objfile *objfile = cu->objfile; |
7684 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7685 | struct dwarf_block *blk; |
7686 | ||
7687 | switch (attr->form) | |
7688 | { | |
7689 | case DW_FORM_addr: | |
107d2387 | 7690 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7691 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7692 | cu_header->addr_size, |
7693 | TYPE_LENGTH (SYMBOL_TYPE | |
7694 | (sym))); | |
4e38b386 | 7695 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7696 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7697 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7698 | it's body - store_unsigned_integer. */ | |
7699 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7700 | DW_ADDR (attr)); | |
c906108c SS |
7701 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7702 | break; | |
7703 | case DW_FORM_block1: | |
7704 | case DW_FORM_block2: | |
7705 | case DW_FORM_block4: | |
7706 | case DW_FORM_block: | |
7707 | blk = DW_BLOCK (attr); | |
7708 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7709 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7710 | blk->size, |
7711 | TYPE_LENGTH (SYMBOL_TYPE | |
7712 | (sym))); | |
4e38b386 | 7713 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7714 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7715 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7716 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7717 | break; | |
2df3850c JM |
7718 | |
7719 | /* The DW_AT_const_value attributes are supposed to carry the | |
7720 | symbol's value "represented as it would be on the target | |
7721 | architecture." By the time we get here, it's already been | |
7722 | converted to host endianness, so we just need to sign- or | |
7723 | zero-extend it as appropriate. */ | |
7724 | case DW_FORM_data1: | |
7725 | dwarf2_const_value_data (attr, sym, 8); | |
7726 | break; | |
c906108c | 7727 | case DW_FORM_data2: |
2df3850c JM |
7728 | dwarf2_const_value_data (attr, sym, 16); |
7729 | break; | |
c906108c | 7730 | case DW_FORM_data4: |
2df3850c JM |
7731 | dwarf2_const_value_data (attr, sym, 32); |
7732 | break; | |
c906108c | 7733 | case DW_FORM_data8: |
2df3850c JM |
7734 | dwarf2_const_value_data (attr, sym, 64); |
7735 | break; | |
7736 | ||
c906108c | 7737 | case DW_FORM_sdata: |
2df3850c JM |
7738 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7739 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7740 | break; | |
7741 | ||
c906108c SS |
7742 | case DW_FORM_udata: |
7743 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7744 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7745 | break; | |
2df3850c | 7746 | |
c906108c | 7747 | default: |
4d3c2250 | 7748 | complaint (&symfile_complaints, |
e2e0b3e5 | 7749 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7750 | dwarf_form_name (attr->form)); |
c906108c SS |
7751 | SYMBOL_VALUE (sym) = 0; |
7752 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7753 | break; | |
7754 | } | |
7755 | } | |
7756 | ||
2df3850c JM |
7757 | |
7758 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7759 | or zero-extend it as appropriate for the symbol's type. */ | |
7760 | static void | |
7761 | dwarf2_const_value_data (struct attribute *attr, | |
7762 | struct symbol *sym, | |
7763 | int bits) | |
7764 | { | |
7765 | LONGEST l = DW_UNSND (attr); | |
7766 | ||
7767 | if (bits < sizeof (l) * 8) | |
7768 | { | |
7769 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7770 | l &= ((LONGEST) 1 << bits) - 1; | |
7771 | else | |
bf9198f1 | 7772 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7773 | } |
7774 | ||
7775 | SYMBOL_VALUE (sym) = l; | |
7776 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7777 | } | |
7778 | ||
7779 | ||
c906108c SS |
7780 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7781 | ||
7782 | static struct type * | |
e7c27a73 | 7783 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7784 | { |
5e2b427d | 7785 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
c906108c SS |
7786 | struct type *type; |
7787 | struct attribute *type_attr; | |
7788 | struct die_info *type_die; | |
c906108c | 7789 | |
e142c38c | 7790 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7791 | if (!type_attr) |
7792 | { | |
7793 | /* A missing DW_AT_type represents a void type. */ | |
5e2b427d | 7794 | return builtin_type (gdbarch)->builtin_void; |
c906108c SS |
7795 | } |
7796 | else | |
10b3939b DJ |
7797 | type_die = follow_die_ref (die, type_attr, cu); |
7798 | ||
e7c27a73 | 7799 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7800 | if (!type) |
7801 | { | |
7802 | dump_die (type_die); | |
8a3fe4f8 | 7803 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7804 | cu->objfile->name); |
c906108c SS |
7805 | } |
7806 | return type; | |
7807 | } | |
7808 | ||
7809 | /* Return the containing type of the die in question using its | |
7810 | DW_AT_containing_type attribute. */ | |
7811 | ||
7812 | static struct type * | |
e7c27a73 | 7813 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7814 | { |
7815 | struct type *type = NULL; | |
7816 | struct attribute *type_attr; | |
7817 | struct die_info *type_die = NULL; | |
c906108c | 7818 | |
e142c38c | 7819 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7820 | if (type_attr) |
7821 | { | |
10b3939b | 7822 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7823 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7824 | } |
7825 | if (!type) | |
7826 | { | |
7827 | if (type_die) | |
7828 | dump_die (type_die); | |
8a3fe4f8 | 7829 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7830 | cu->objfile->name); |
c906108c SS |
7831 | } |
7832 | return type; | |
7833 | } | |
7834 | ||
c906108c | 7835 | static struct type * |
e7c27a73 | 7836 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7837 | { |
7838 | if (die->type) | |
7839 | { | |
7840 | return die->type; | |
7841 | } | |
7842 | else | |
7843 | { | |
e7c27a73 | 7844 | read_type_die (die, cu); |
c906108c SS |
7845 | if (!die->type) |
7846 | { | |
7847 | dump_die (die); | |
8a3fe4f8 | 7848 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7849 | cu->objfile->name); |
c906108c SS |
7850 | } |
7851 | return die->type; | |
7852 | } | |
7853 | } | |
7854 | ||
7855 | static void | |
e7c27a73 | 7856 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7857 | { |
e142c38c | 7858 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7859 | const char *old_prefix = processing_current_prefix; |
7860 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7861 | processing_current_prefix = prefix; | |
7862 | ||
c906108c SS |
7863 | switch (die->tag) |
7864 | { | |
7865 | case DW_TAG_class_type: | |
680b30c7 | 7866 | case DW_TAG_interface_type: |
c906108c SS |
7867 | case DW_TAG_structure_type: |
7868 | case DW_TAG_union_type: | |
134d01f1 | 7869 | read_structure_type (die, cu); |
c906108c SS |
7870 | break; |
7871 | case DW_TAG_enumeration_type: | |
134d01f1 | 7872 | read_enumeration_type (die, cu); |
c906108c SS |
7873 | break; |
7874 | case DW_TAG_subprogram: | |
7875 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7876 | read_subroutine_type (die, cu); |
c906108c SS |
7877 | break; |
7878 | case DW_TAG_array_type: | |
e7c27a73 | 7879 | read_array_type (die, cu); |
c906108c | 7880 | break; |
72019c9c GM |
7881 | case DW_TAG_set_type: |
7882 | read_set_type (die, cu); | |
7883 | break; | |
c906108c | 7884 | case DW_TAG_pointer_type: |
e7c27a73 | 7885 | read_tag_pointer_type (die, cu); |
c906108c SS |
7886 | break; |
7887 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7888 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7889 | break; |
7890 | case DW_TAG_reference_type: | |
e7c27a73 | 7891 | read_tag_reference_type (die, cu); |
c906108c SS |
7892 | break; |
7893 | case DW_TAG_const_type: | |
e7c27a73 | 7894 | read_tag_const_type (die, cu); |
c906108c SS |
7895 | break; |
7896 | case DW_TAG_volatile_type: | |
e7c27a73 | 7897 | read_tag_volatile_type (die, cu); |
c906108c SS |
7898 | break; |
7899 | case DW_TAG_string_type: | |
e7c27a73 | 7900 | read_tag_string_type (die, cu); |
c906108c SS |
7901 | break; |
7902 | case DW_TAG_typedef: | |
e7c27a73 | 7903 | read_typedef (die, cu); |
c906108c | 7904 | break; |
a02abb62 JB |
7905 | case DW_TAG_subrange_type: |
7906 | read_subrange_type (die, cu); | |
7907 | break; | |
c906108c | 7908 | case DW_TAG_base_type: |
e7c27a73 | 7909 | read_base_type (die, cu); |
c906108c | 7910 | break; |
81a17f79 JB |
7911 | case DW_TAG_unspecified_type: |
7912 | read_unspecified_type (die, cu); | |
7913 | break; | |
c906108c | 7914 | default: |
a1f5b845 | 7915 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7916 | dwarf_tag_name (die->tag)); |
c906108c SS |
7917 | break; |
7918 | } | |
63d06c5c DC |
7919 | |
7920 | processing_current_prefix = old_prefix; | |
7921 | do_cleanups (back_to); | |
7922 | } | |
7923 | ||
fdde2d81 DC |
7924 | /* Return the name of the namespace/class that DIE is defined within, |
7925 | or "" if we can't tell. The caller should xfree the result. */ | |
7926 | ||
7927 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7928 | therein) for an example of how to use this function to deal with | |
7929 | DW_AT_specification. */ | |
7930 | ||
7931 | static char * | |
e142c38c | 7932 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7933 | { |
7934 | struct die_info *parent; | |
7935 | ||
987504bb JJ |
7936 | if (cu->language != language_cplus |
7937 | && cu->language != language_java) | |
63d06c5c DC |
7938 | return NULL; |
7939 | ||
7940 | parent = die->parent; | |
7941 | ||
7942 | if (parent == NULL) | |
7943 | { | |
8176b9b8 | 7944 | return xstrdup (""); |
63d06c5c DC |
7945 | } |
7946 | else | |
7947 | { | |
63d06c5c DC |
7948 | switch (parent->tag) { |
7949 | case DW_TAG_namespace: | |
7950 | { | |
8176b9b8 DC |
7951 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7952 | before doing this check? */ | |
7953 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7954 | { | |
7955 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7956 | } | |
7957 | else | |
7958 | { | |
7959 | int dummy; | |
7960 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7961 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7962 | namespace_name (parent, &dummy, |
987504bb JJ |
7963 | cu), |
7964 | cu); | |
8176b9b8 DC |
7965 | xfree (parent_prefix); |
7966 | return retval; | |
7967 | } | |
63d06c5c DC |
7968 | } |
7969 | break; | |
7970 | case DW_TAG_class_type: | |
680b30c7 | 7971 | case DW_TAG_interface_type: |
63d06c5c DC |
7972 | case DW_TAG_structure_type: |
7973 | { | |
8176b9b8 | 7974 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7975 | { |
8176b9b8 | 7976 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7977 | } |
7978 | else | |
8176b9b8 DC |
7979 | { |
7980 | const char *old_prefix = processing_current_prefix; | |
7981 | char *new_prefix = determine_prefix (parent, cu); | |
7982 | char *retval; | |
7983 | ||
7984 | processing_current_prefix = new_prefix; | |
7985 | retval = determine_class_name (parent, cu); | |
7986 | processing_current_prefix = old_prefix; | |
7987 | ||
7988 | xfree (new_prefix); | |
7989 | return retval; | |
7990 | } | |
63d06c5c | 7991 | } |
63d06c5c | 7992 | default: |
8176b9b8 | 7993 | return determine_prefix (parent, cu); |
63d06c5c | 7994 | } |
63d06c5c DC |
7995 | } |
7996 | } | |
7997 | ||
987504bb JJ |
7998 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7999 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
8000 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
8001 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
8002 | is used to determine the language and hence, the appropriate separator. */ | |
8003 | ||
8004 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
8005 | |
8006 | static char * | |
987504bb JJ |
8007 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
8008 | struct dwarf2_cu *cu) | |
63d06c5c | 8009 | { |
987504bb | 8010 | char *sep; |
63d06c5c | 8011 | |
987504bb JJ |
8012 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
8013 | sep = ""; | |
8014 | else if (cu->language == language_java) | |
8015 | sep = "."; | |
8016 | else | |
8017 | sep = "::"; | |
63d06c5c | 8018 | |
987504bb JJ |
8019 | if (obs == NULL) |
8020 | { | |
8021 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
8022 | retval[0] = '\0'; | |
8023 | ||
8024 | if (prefix) | |
8025 | { | |
8026 | strcpy (retval, prefix); | |
8027 | strcat (retval, sep); | |
8028 | } | |
8029 | if (suffix) | |
8030 | strcat (retval, suffix); | |
8031 | ||
63d06c5c DC |
8032 | return retval; |
8033 | } | |
987504bb JJ |
8034 | else |
8035 | { | |
8036 | /* We have an obstack. */ | |
8037 | return obconcat (obs, prefix, sep, suffix); | |
8038 | } | |
63d06c5c DC |
8039 | } |
8040 | ||
c906108c SS |
8041 | #if 0 |
8042 | struct die_info * | |
fba45db2 | 8043 | copy_die (struct die_info *old_die) |
c906108c SS |
8044 | { |
8045 | struct die_info *new_die; | |
8046 | int i, num_attrs; | |
8047 | ||
8048 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
8049 | memset (new_die, 0, sizeof (struct die_info)); | |
8050 | ||
8051 | new_die->tag = old_die->tag; | |
8052 | new_die->has_children = old_die->has_children; | |
8053 | new_die->abbrev = old_die->abbrev; | |
8054 | new_die->offset = old_die->offset; | |
8055 | new_die->type = NULL; | |
8056 | ||
8057 | num_attrs = old_die->num_attrs; | |
8058 | new_die->num_attrs = num_attrs; | |
8059 | new_die->attrs = (struct attribute *) | |
8060 | xmalloc (num_attrs * sizeof (struct attribute)); | |
8061 | ||
8062 | for (i = 0; i < old_die->num_attrs; ++i) | |
8063 | { | |
8064 | new_die->attrs[i].name = old_die->attrs[i].name; | |
8065 | new_die->attrs[i].form = old_die->attrs[i].form; | |
8066 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
8067 | } | |
8068 | ||
8069 | new_die->next = NULL; | |
8070 | return new_die; | |
8071 | } | |
8072 | #endif | |
8073 | ||
8074 | /* Return sibling of die, NULL if no sibling. */ | |
8075 | ||
f9aca02d | 8076 | static struct die_info * |
fba45db2 | 8077 | sibling_die (struct die_info *die) |
c906108c | 8078 | { |
639d11d3 | 8079 | return die->sibling; |
c906108c SS |
8080 | } |
8081 | ||
8082 | /* Get linkage name of a die, return NULL if not found. */ | |
8083 | ||
8084 | static char * | |
e142c38c | 8085 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8086 | { |
8087 | struct attribute *attr; | |
8088 | ||
e142c38c | 8089 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
8090 | if (attr && DW_STRING (attr)) |
8091 | return DW_STRING (attr); | |
e142c38c | 8092 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
8093 | if (attr && DW_STRING (attr)) |
8094 | return DW_STRING (attr); | |
8095 | return NULL; | |
8096 | } | |
8097 | ||
9219021c DC |
8098 | /* Get name of a die, return NULL if not found. */ |
8099 | ||
8100 | static char * | |
e142c38c | 8101 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
8102 | { |
8103 | struct attribute *attr; | |
8104 | ||
e142c38c | 8105 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
8106 | if (attr && DW_STRING (attr)) |
8107 | return DW_STRING (attr); | |
8108 | return NULL; | |
8109 | } | |
8110 | ||
8111 | /* Return the die that this die in an extension of, or NULL if there | |
8112 | is none. */ | |
8113 | ||
8114 | static struct die_info * | |
e142c38c | 8115 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
8116 | { |
8117 | struct attribute *attr; | |
9219021c | 8118 | |
e142c38c | 8119 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
8120 | if (attr == NULL) |
8121 | return NULL; | |
8122 | ||
10b3939b | 8123 | return follow_die_ref (die, attr, cu); |
9219021c DC |
8124 | } |
8125 | ||
c906108c SS |
8126 | /* Convert a DIE tag into its string name. */ |
8127 | ||
8128 | static char * | |
aa1ee363 | 8129 | dwarf_tag_name (unsigned tag) |
c906108c SS |
8130 | { |
8131 | switch (tag) | |
8132 | { | |
8133 | case DW_TAG_padding: | |
8134 | return "DW_TAG_padding"; | |
8135 | case DW_TAG_array_type: | |
8136 | return "DW_TAG_array_type"; | |
8137 | case DW_TAG_class_type: | |
8138 | return "DW_TAG_class_type"; | |
8139 | case DW_TAG_entry_point: | |
8140 | return "DW_TAG_entry_point"; | |
8141 | case DW_TAG_enumeration_type: | |
8142 | return "DW_TAG_enumeration_type"; | |
8143 | case DW_TAG_formal_parameter: | |
8144 | return "DW_TAG_formal_parameter"; | |
8145 | case DW_TAG_imported_declaration: | |
8146 | return "DW_TAG_imported_declaration"; | |
8147 | case DW_TAG_label: | |
8148 | return "DW_TAG_label"; | |
8149 | case DW_TAG_lexical_block: | |
8150 | return "DW_TAG_lexical_block"; | |
8151 | case DW_TAG_member: | |
8152 | return "DW_TAG_member"; | |
8153 | case DW_TAG_pointer_type: | |
8154 | return "DW_TAG_pointer_type"; | |
8155 | case DW_TAG_reference_type: | |
8156 | return "DW_TAG_reference_type"; | |
8157 | case DW_TAG_compile_unit: | |
8158 | return "DW_TAG_compile_unit"; | |
8159 | case DW_TAG_string_type: | |
8160 | return "DW_TAG_string_type"; | |
8161 | case DW_TAG_structure_type: | |
8162 | return "DW_TAG_structure_type"; | |
8163 | case DW_TAG_subroutine_type: | |
8164 | return "DW_TAG_subroutine_type"; | |
8165 | case DW_TAG_typedef: | |
8166 | return "DW_TAG_typedef"; | |
8167 | case DW_TAG_union_type: | |
8168 | return "DW_TAG_union_type"; | |
8169 | case DW_TAG_unspecified_parameters: | |
8170 | return "DW_TAG_unspecified_parameters"; | |
8171 | case DW_TAG_variant: | |
8172 | return "DW_TAG_variant"; | |
8173 | case DW_TAG_common_block: | |
8174 | return "DW_TAG_common_block"; | |
8175 | case DW_TAG_common_inclusion: | |
8176 | return "DW_TAG_common_inclusion"; | |
8177 | case DW_TAG_inheritance: | |
8178 | return "DW_TAG_inheritance"; | |
8179 | case DW_TAG_inlined_subroutine: | |
8180 | return "DW_TAG_inlined_subroutine"; | |
8181 | case DW_TAG_module: | |
8182 | return "DW_TAG_module"; | |
8183 | case DW_TAG_ptr_to_member_type: | |
8184 | return "DW_TAG_ptr_to_member_type"; | |
8185 | case DW_TAG_set_type: | |
8186 | return "DW_TAG_set_type"; | |
8187 | case DW_TAG_subrange_type: | |
8188 | return "DW_TAG_subrange_type"; | |
8189 | case DW_TAG_with_stmt: | |
8190 | return "DW_TAG_with_stmt"; | |
8191 | case DW_TAG_access_declaration: | |
8192 | return "DW_TAG_access_declaration"; | |
8193 | case DW_TAG_base_type: | |
8194 | return "DW_TAG_base_type"; | |
8195 | case DW_TAG_catch_block: | |
8196 | return "DW_TAG_catch_block"; | |
8197 | case DW_TAG_const_type: | |
8198 | return "DW_TAG_const_type"; | |
8199 | case DW_TAG_constant: | |
8200 | return "DW_TAG_constant"; | |
8201 | case DW_TAG_enumerator: | |
8202 | return "DW_TAG_enumerator"; | |
8203 | case DW_TAG_file_type: | |
8204 | return "DW_TAG_file_type"; | |
8205 | case DW_TAG_friend: | |
8206 | return "DW_TAG_friend"; | |
8207 | case DW_TAG_namelist: | |
8208 | return "DW_TAG_namelist"; | |
8209 | case DW_TAG_namelist_item: | |
8210 | return "DW_TAG_namelist_item"; | |
8211 | case DW_TAG_packed_type: | |
8212 | return "DW_TAG_packed_type"; | |
8213 | case DW_TAG_subprogram: | |
8214 | return "DW_TAG_subprogram"; | |
8215 | case DW_TAG_template_type_param: | |
8216 | return "DW_TAG_template_type_param"; | |
8217 | case DW_TAG_template_value_param: | |
8218 | return "DW_TAG_template_value_param"; | |
8219 | case DW_TAG_thrown_type: | |
8220 | return "DW_TAG_thrown_type"; | |
8221 | case DW_TAG_try_block: | |
8222 | return "DW_TAG_try_block"; | |
8223 | case DW_TAG_variant_part: | |
8224 | return "DW_TAG_variant_part"; | |
8225 | case DW_TAG_variable: | |
8226 | return "DW_TAG_variable"; | |
8227 | case DW_TAG_volatile_type: | |
8228 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
8229 | case DW_TAG_dwarf_procedure: |
8230 | return "DW_TAG_dwarf_procedure"; | |
8231 | case DW_TAG_restrict_type: | |
8232 | return "DW_TAG_restrict_type"; | |
8233 | case DW_TAG_interface_type: | |
8234 | return "DW_TAG_interface_type"; | |
8235 | case DW_TAG_namespace: | |
8236 | return "DW_TAG_namespace"; | |
8237 | case DW_TAG_imported_module: | |
8238 | return "DW_TAG_imported_module"; | |
8239 | case DW_TAG_unspecified_type: | |
8240 | return "DW_TAG_unspecified_type"; | |
8241 | case DW_TAG_partial_unit: | |
8242 | return "DW_TAG_partial_unit"; | |
8243 | case DW_TAG_imported_unit: | |
8244 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
8245 | case DW_TAG_condition: |
8246 | return "DW_TAG_condition"; | |
8247 | case DW_TAG_shared_type: | |
8248 | return "DW_TAG_shared_type"; | |
c906108c SS |
8249 | case DW_TAG_MIPS_loop: |
8250 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
8251 | case DW_TAG_HP_array_descriptor: |
8252 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
8253 | case DW_TAG_format_label: |
8254 | return "DW_TAG_format_label"; | |
8255 | case DW_TAG_function_template: | |
8256 | return "DW_TAG_function_template"; | |
8257 | case DW_TAG_class_template: | |
8258 | return "DW_TAG_class_template"; | |
b7619582 GF |
8259 | case DW_TAG_GNU_BINCL: |
8260 | return "DW_TAG_GNU_BINCL"; | |
8261 | case DW_TAG_GNU_EINCL: | |
8262 | return "DW_TAG_GNU_EINCL"; | |
8263 | case DW_TAG_upc_shared_type: | |
8264 | return "DW_TAG_upc_shared_type"; | |
8265 | case DW_TAG_upc_strict_type: | |
8266 | return "DW_TAG_upc_strict_type"; | |
8267 | case DW_TAG_upc_relaxed_type: | |
8268 | return "DW_TAG_upc_relaxed_type"; | |
8269 | case DW_TAG_PGI_kanji_type: | |
8270 | return "DW_TAG_PGI_kanji_type"; | |
8271 | case DW_TAG_PGI_interface_block: | |
8272 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
8273 | default: |
8274 | return "DW_TAG_<unknown>"; | |
8275 | } | |
8276 | } | |
8277 | ||
8278 | /* Convert a DWARF attribute code into its string name. */ | |
8279 | ||
8280 | static char * | |
aa1ee363 | 8281 | dwarf_attr_name (unsigned attr) |
c906108c SS |
8282 | { |
8283 | switch (attr) | |
8284 | { | |
8285 | case DW_AT_sibling: | |
8286 | return "DW_AT_sibling"; | |
8287 | case DW_AT_location: | |
8288 | return "DW_AT_location"; | |
8289 | case DW_AT_name: | |
8290 | return "DW_AT_name"; | |
8291 | case DW_AT_ordering: | |
8292 | return "DW_AT_ordering"; | |
8293 | case DW_AT_subscr_data: | |
8294 | return "DW_AT_subscr_data"; | |
8295 | case DW_AT_byte_size: | |
8296 | return "DW_AT_byte_size"; | |
8297 | case DW_AT_bit_offset: | |
8298 | return "DW_AT_bit_offset"; | |
8299 | case DW_AT_bit_size: | |
8300 | return "DW_AT_bit_size"; | |
8301 | case DW_AT_element_list: | |
8302 | return "DW_AT_element_list"; | |
8303 | case DW_AT_stmt_list: | |
8304 | return "DW_AT_stmt_list"; | |
8305 | case DW_AT_low_pc: | |
8306 | return "DW_AT_low_pc"; | |
8307 | case DW_AT_high_pc: | |
8308 | return "DW_AT_high_pc"; | |
8309 | case DW_AT_language: | |
8310 | return "DW_AT_language"; | |
8311 | case DW_AT_member: | |
8312 | return "DW_AT_member"; | |
8313 | case DW_AT_discr: | |
8314 | return "DW_AT_discr"; | |
8315 | case DW_AT_discr_value: | |
8316 | return "DW_AT_discr_value"; | |
8317 | case DW_AT_visibility: | |
8318 | return "DW_AT_visibility"; | |
8319 | case DW_AT_import: | |
8320 | return "DW_AT_import"; | |
8321 | case DW_AT_string_length: | |
8322 | return "DW_AT_string_length"; | |
8323 | case DW_AT_common_reference: | |
8324 | return "DW_AT_common_reference"; | |
8325 | case DW_AT_comp_dir: | |
8326 | return "DW_AT_comp_dir"; | |
8327 | case DW_AT_const_value: | |
8328 | return "DW_AT_const_value"; | |
8329 | case DW_AT_containing_type: | |
8330 | return "DW_AT_containing_type"; | |
8331 | case DW_AT_default_value: | |
8332 | return "DW_AT_default_value"; | |
8333 | case DW_AT_inline: | |
8334 | return "DW_AT_inline"; | |
8335 | case DW_AT_is_optional: | |
8336 | return "DW_AT_is_optional"; | |
8337 | case DW_AT_lower_bound: | |
8338 | return "DW_AT_lower_bound"; | |
8339 | case DW_AT_producer: | |
8340 | return "DW_AT_producer"; | |
8341 | case DW_AT_prototyped: | |
8342 | return "DW_AT_prototyped"; | |
8343 | case DW_AT_return_addr: | |
8344 | return "DW_AT_return_addr"; | |
8345 | case DW_AT_start_scope: | |
8346 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
8347 | case DW_AT_bit_stride: |
8348 | return "DW_AT_bit_stride"; | |
c906108c SS |
8349 | case DW_AT_upper_bound: |
8350 | return "DW_AT_upper_bound"; | |
8351 | case DW_AT_abstract_origin: | |
8352 | return "DW_AT_abstract_origin"; | |
8353 | case DW_AT_accessibility: | |
8354 | return "DW_AT_accessibility"; | |
8355 | case DW_AT_address_class: | |
8356 | return "DW_AT_address_class"; | |
8357 | case DW_AT_artificial: | |
8358 | return "DW_AT_artificial"; | |
8359 | case DW_AT_base_types: | |
8360 | return "DW_AT_base_types"; | |
8361 | case DW_AT_calling_convention: | |
8362 | return "DW_AT_calling_convention"; | |
8363 | case DW_AT_count: | |
8364 | return "DW_AT_count"; | |
8365 | case DW_AT_data_member_location: | |
8366 | return "DW_AT_data_member_location"; | |
8367 | case DW_AT_decl_column: | |
8368 | return "DW_AT_decl_column"; | |
8369 | case DW_AT_decl_file: | |
8370 | return "DW_AT_decl_file"; | |
8371 | case DW_AT_decl_line: | |
8372 | return "DW_AT_decl_line"; | |
8373 | case DW_AT_declaration: | |
8374 | return "DW_AT_declaration"; | |
8375 | case DW_AT_discr_list: | |
8376 | return "DW_AT_discr_list"; | |
8377 | case DW_AT_encoding: | |
8378 | return "DW_AT_encoding"; | |
8379 | case DW_AT_external: | |
8380 | return "DW_AT_external"; | |
8381 | case DW_AT_frame_base: | |
8382 | return "DW_AT_frame_base"; | |
8383 | case DW_AT_friend: | |
8384 | return "DW_AT_friend"; | |
8385 | case DW_AT_identifier_case: | |
8386 | return "DW_AT_identifier_case"; | |
8387 | case DW_AT_macro_info: | |
8388 | return "DW_AT_macro_info"; | |
8389 | case DW_AT_namelist_items: | |
8390 | return "DW_AT_namelist_items"; | |
8391 | case DW_AT_priority: | |
8392 | return "DW_AT_priority"; | |
8393 | case DW_AT_segment: | |
8394 | return "DW_AT_segment"; | |
8395 | case DW_AT_specification: | |
8396 | return "DW_AT_specification"; | |
8397 | case DW_AT_static_link: | |
8398 | return "DW_AT_static_link"; | |
8399 | case DW_AT_type: | |
8400 | return "DW_AT_type"; | |
8401 | case DW_AT_use_location: | |
8402 | return "DW_AT_use_location"; | |
8403 | case DW_AT_variable_parameter: | |
8404 | return "DW_AT_variable_parameter"; | |
8405 | case DW_AT_virtuality: | |
8406 | return "DW_AT_virtuality"; | |
8407 | case DW_AT_vtable_elem_location: | |
8408 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8409 | /* DWARF 3 values. */ |
d9fa45fe DC |
8410 | case DW_AT_allocated: |
8411 | return "DW_AT_allocated"; | |
8412 | case DW_AT_associated: | |
8413 | return "DW_AT_associated"; | |
8414 | case DW_AT_data_location: | |
8415 | return "DW_AT_data_location"; | |
09fa0d7c JK |
8416 | case DW_AT_byte_stride: |
8417 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
8418 | case DW_AT_entry_pc: |
8419 | return "DW_AT_entry_pc"; | |
8420 | case DW_AT_use_UTF8: | |
8421 | return "DW_AT_use_UTF8"; | |
8422 | case DW_AT_extension: | |
8423 | return "DW_AT_extension"; | |
8424 | case DW_AT_ranges: | |
8425 | return "DW_AT_ranges"; | |
8426 | case DW_AT_trampoline: | |
8427 | return "DW_AT_trampoline"; | |
8428 | case DW_AT_call_column: | |
8429 | return "DW_AT_call_column"; | |
8430 | case DW_AT_call_file: | |
8431 | return "DW_AT_call_file"; | |
8432 | case DW_AT_call_line: | |
8433 | return "DW_AT_call_line"; | |
b7619582 GF |
8434 | case DW_AT_description: |
8435 | return "DW_AT_description"; | |
8436 | case DW_AT_binary_scale: | |
8437 | return "DW_AT_binary_scale"; | |
8438 | case DW_AT_decimal_scale: | |
8439 | return "DW_AT_decimal_scale"; | |
8440 | case DW_AT_small: | |
8441 | return "DW_AT_small"; | |
8442 | case DW_AT_decimal_sign: | |
8443 | return "DW_AT_decimal_sign"; | |
8444 | case DW_AT_digit_count: | |
8445 | return "DW_AT_digit_count"; | |
8446 | case DW_AT_picture_string: | |
8447 | return "DW_AT_picture_string"; | |
8448 | case DW_AT_mutable: | |
8449 | return "DW_AT_mutable"; | |
8450 | case DW_AT_threads_scaled: | |
8451 | return "DW_AT_threads_scaled"; | |
8452 | case DW_AT_explicit: | |
8453 | return "DW_AT_explicit"; | |
8454 | case DW_AT_object_pointer: | |
8455 | return "DW_AT_object_pointer"; | |
8456 | case DW_AT_endianity: | |
8457 | return "DW_AT_endianity"; | |
8458 | case DW_AT_elemental: | |
8459 | return "DW_AT_elemental"; | |
8460 | case DW_AT_pure: | |
8461 | return "DW_AT_pure"; | |
8462 | case DW_AT_recursive: | |
8463 | return "DW_AT_recursive"; | |
c906108c | 8464 | #ifdef MIPS |
b7619582 | 8465 | /* SGI/MIPS extensions. */ |
c906108c SS |
8466 | case DW_AT_MIPS_fde: |
8467 | return "DW_AT_MIPS_fde"; | |
8468 | case DW_AT_MIPS_loop_begin: | |
8469 | return "DW_AT_MIPS_loop_begin"; | |
8470 | case DW_AT_MIPS_tail_loop_begin: | |
8471 | return "DW_AT_MIPS_tail_loop_begin"; | |
8472 | case DW_AT_MIPS_epilog_begin: | |
8473 | return "DW_AT_MIPS_epilog_begin"; | |
8474 | case DW_AT_MIPS_loop_unroll_factor: | |
8475 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8476 | case DW_AT_MIPS_software_pipeline_depth: | |
8477 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8478 | case DW_AT_MIPS_linkage_name: | |
8479 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8480 | case DW_AT_MIPS_stride: |
8481 | return "DW_AT_MIPS_stride"; | |
8482 | case DW_AT_MIPS_abstract_name: | |
8483 | return "DW_AT_MIPS_abstract_name"; | |
8484 | case DW_AT_MIPS_clone_origin: | |
8485 | return "DW_AT_MIPS_clone_origin"; | |
8486 | case DW_AT_MIPS_has_inlines: | |
8487 | return "DW_AT_MIPS_has_inlines"; | |
8488 | #endif | |
8489 | /* HP extensions. */ | |
8490 | case DW_AT_HP_block_index: | |
8491 | return "DW_AT_HP_block_index"; | |
8492 | case DW_AT_HP_unmodifiable: | |
8493 | return "DW_AT_HP_unmodifiable"; | |
8494 | case DW_AT_HP_actuals_stmt_list: | |
8495 | return "DW_AT_HP_actuals_stmt_list"; | |
8496 | case DW_AT_HP_proc_per_section: | |
8497 | return "DW_AT_HP_proc_per_section"; | |
8498 | case DW_AT_HP_raw_data_ptr: | |
8499 | return "DW_AT_HP_raw_data_ptr"; | |
8500 | case DW_AT_HP_pass_by_reference: | |
8501 | return "DW_AT_HP_pass_by_reference"; | |
8502 | case DW_AT_HP_opt_level: | |
8503 | return "DW_AT_HP_opt_level"; | |
8504 | case DW_AT_HP_prof_version_id: | |
8505 | return "DW_AT_HP_prof_version_id"; | |
8506 | case DW_AT_HP_opt_flags: | |
8507 | return "DW_AT_HP_opt_flags"; | |
8508 | case DW_AT_HP_cold_region_low_pc: | |
8509 | return "DW_AT_HP_cold_region_low_pc"; | |
8510 | case DW_AT_HP_cold_region_high_pc: | |
8511 | return "DW_AT_HP_cold_region_high_pc"; | |
8512 | case DW_AT_HP_all_variables_modifiable: | |
8513 | return "DW_AT_HP_all_variables_modifiable"; | |
8514 | case DW_AT_HP_linkage_name: | |
8515 | return "DW_AT_HP_linkage_name"; | |
8516 | case DW_AT_HP_prof_flags: | |
8517 | return "DW_AT_HP_prof_flags"; | |
8518 | /* GNU extensions. */ | |
c906108c SS |
8519 | case DW_AT_sf_names: |
8520 | return "DW_AT_sf_names"; | |
8521 | case DW_AT_src_info: | |
8522 | return "DW_AT_src_info"; | |
8523 | case DW_AT_mac_info: | |
8524 | return "DW_AT_mac_info"; | |
8525 | case DW_AT_src_coords: | |
8526 | return "DW_AT_src_coords"; | |
8527 | case DW_AT_body_begin: | |
8528 | return "DW_AT_body_begin"; | |
8529 | case DW_AT_body_end: | |
8530 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8531 | case DW_AT_GNU_vector: |
8532 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8533 | /* VMS extensions. */ |
8534 | case DW_AT_VMS_rtnbeg_pd_address: | |
8535 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8536 | /* UPC extension. */ | |
8537 | case DW_AT_upc_threads_scaled: | |
8538 | return "DW_AT_upc_threads_scaled"; | |
8539 | /* PGI (STMicroelectronics) extensions. */ | |
8540 | case DW_AT_PGI_lbase: | |
8541 | return "DW_AT_PGI_lbase"; | |
8542 | case DW_AT_PGI_soffset: | |
8543 | return "DW_AT_PGI_soffset"; | |
8544 | case DW_AT_PGI_lstride: | |
8545 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8546 | default: |
8547 | return "DW_AT_<unknown>"; | |
8548 | } | |
8549 | } | |
8550 | ||
8551 | /* Convert a DWARF value form code into its string name. */ | |
8552 | ||
8553 | static char * | |
aa1ee363 | 8554 | dwarf_form_name (unsigned form) |
c906108c SS |
8555 | { |
8556 | switch (form) | |
8557 | { | |
8558 | case DW_FORM_addr: | |
8559 | return "DW_FORM_addr"; | |
8560 | case DW_FORM_block2: | |
8561 | return "DW_FORM_block2"; | |
8562 | case DW_FORM_block4: | |
8563 | return "DW_FORM_block4"; | |
8564 | case DW_FORM_data2: | |
8565 | return "DW_FORM_data2"; | |
8566 | case DW_FORM_data4: | |
8567 | return "DW_FORM_data4"; | |
8568 | case DW_FORM_data8: | |
8569 | return "DW_FORM_data8"; | |
8570 | case DW_FORM_string: | |
8571 | return "DW_FORM_string"; | |
8572 | case DW_FORM_block: | |
8573 | return "DW_FORM_block"; | |
8574 | case DW_FORM_block1: | |
8575 | return "DW_FORM_block1"; | |
8576 | case DW_FORM_data1: | |
8577 | return "DW_FORM_data1"; | |
8578 | case DW_FORM_flag: | |
8579 | return "DW_FORM_flag"; | |
8580 | case DW_FORM_sdata: | |
8581 | return "DW_FORM_sdata"; | |
8582 | case DW_FORM_strp: | |
8583 | return "DW_FORM_strp"; | |
8584 | case DW_FORM_udata: | |
8585 | return "DW_FORM_udata"; | |
8586 | case DW_FORM_ref_addr: | |
8587 | return "DW_FORM_ref_addr"; | |
8588 | case DW_FORM_ref1: | |
8589 | return "DW_FORM_ref1"; | |
8590 | case DW_FORM_ref2: | |
8591 | return "DW_FORM_ref2"; | |
8592 | case DW_FORM_ref4: | |
8593 | return "DW_FORM_ref4"; | |
8594 | case DW_FORM_ref8: | |
8595 | return "DW_FORM_ref8"; | |
8596 | case DW_FORM_ref_udata: | |
8597 | return "DW_FORM_ref_udata"; | |
8598 | case DW_FORM_indirect: | |
8599 | return "DW_FORM_indirect"; | |
8600 | default: | |
8601 | return "DW_FORM_<unknown>"; | |
8602 | } | |
8603 | } | |
8604 | ||
8605 | /* Convert a DWARF stack opcode into its string name. */ | |
8606 | ||
8607 | static char * | |
aa1ee363 | 8608 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8609 | { |
8610 | switch (op) | |
8611 | { | |
8612 | case DW_OP_addr: | |
8613 | return "DW_OP_addr"; | |
8614 | case DW_OP_deref: | |
8615 | return "DW_OP_deref"; | |
8616 | case DW_OP_const1u: | |
8617 | return "DW_OP_const1u"; | |
8618 | case DW_OP_const1s: | |
8619 | return "DW_OP_const1s"; | |
8620 | case DW_OP_const2u: | |
8621 | return "DW_OP_const2u"; | |
8622 | case DW_OP_const2s: | |
8623 | return "DW_OP_const2s"; | |
8624 | case DW_OP_const4u: | |
8625 | return "DW_OP_const4u"; | |
8626 | case DW_OP_const4s: | |
8627 | return "DW_OP_const4s"; | |
8628 | case DW_OP_const8u: | |
8629 | return "DW_OP_const8u"; | |
8630 | case DW_OP_const8s: | |
8631 | return "DW_OP_const8s"; | |
8632 | case DW_OP_constu: | |
8633 | return "DW_OP_constu"; | |
8634 | case DW_OP_consts: | |
8635 | return "DW_OP_consts"; | |
8636 | case DW_OP_dup: | |
8637 | return "DW_OP_dup"; | |
8638 | case DW_OP_drop: | |
8639 | return "DW_OP_drop"; | |
8640 | case DW_OP_over: | |
8641 | return "DW_OP_over"; | |
8642 | case DW_OP_pick: | |
8643 | return "DW_OP_pick"; | |
8644 | case DW_OP_swap: | |
8645 | return "DW_OP_swap"; | |
8646 | case DW_OP_rot: | |
8647 | return "DW_OP_rot"; | |
8648 | case DW_OP_xderef: | |
8649 | return "DW_OP_xderef"; | |
8650 | case DW_OP_abs: | |
8651 | return "DW_OP_abs"; | |
8652 | case DW_OP_and: | |
8653 | return "DW_OP_and"; | |
8654 | case DW_OP_div: | |
8655 | return "DW_OP_div"; | |
8656 | case DW_OP_minus: | |
8657 | return "DW_OP_minus"; | |
8658 | case DW_OP_mod: | |
8659 | return "DW_OP_mod"; | |
8660 | case DW_OP_mul: | |
8661 | return "DW_OP_mul"; | |
8662 | case DW_OP_neg: | |
8663 | return "DW_OP_neg"; | |
8664 | case DW_OP_not: | |
8665 | return "DW_OP_not"; | |
8666 | case DW_OP_or: | |
8667 | return "DW_OP_or"; | |
8668 | case DW_OP_plus: | |
8669 | return "DW_OP_plus"; | |
8670 | case DW_OP_plus_uconst: | |
8671 | return "DW_OP_plus_uconst"; | |
8672 | case DW_OP_shl: | |
8673 | return "DW_OP_shl"; | |
8674 | case DW_OP_shr: | |
8675 | return "DW_OP_shr"; | |
8676 | case DW_OP_shra: | |
8677 | return "DW_OP_shra"; | |
8678 | case DW_OP_xor: | |
8679 | return "DW_OP_xor"; | |
8680 | case DW_OP_bra: | |
8681 | return "DW_OP_bra"; | |
8682 | case DW_OP_eq: | |
8683 | return "DW_OP_eq"; | |
8684 | case DW_OP_ge: | |
8685 | return "DW_OP_ge"; | |
8686 | case DW_OP_gt: | |
8687 | return "DW_OP_gt"; | |
8688 | case DW_OP_le: | |
8689 | return "DW_OP_le"; | |
8690 | case DW_OP_lt: | |
8691 | return "DW_OP_lt"; | |
8692 | case DW_OP_ne: | |
8693 | return "DW_OP_ne"; | |
8694 | case DW_OP_skip: | |
8695 | return "DW_OP_skip"; | |
8696 | case DW_OP_lit0: | |
8697 | return "DW_OP_lit0"; | |
8698 | case DW_OP_lit1: | |
8699 | return "DW_OP_lit1"; | |
8700 | case DW_OP_lit2: | |
8701 | return "DW_OP_lit2"; | |
8702 | case DW_OP_lit3: | |
8703 | return "DW_OP_lit3"; | |
8704 | case DW_OP_lit4: | |
8705 | return "DW_OP_lit4"; | |
8706 | case DW_OP_lit5: | |
8707 | return "DW_OP_lit5"; | |
8708 | case DW_OP_lit6: | |
8709 | return "DW_OP_lit6"; | |
8710 | case DW_OP_lit7: | |
8711 | return "DW_OP_lit7"; | |
8712 | case DW_OP_lit8: | |
8713 | return "DW_OP_lit8"; | |
8714 | case DW_OP_lit9: | |
8715 | return "DW_OP_lit9"; | |
8716 | case DW_OP_lit10: | |
8717 | return "DW_OP_lit10"; | |
8718 | case DW_OP_lit11: | |
8719 | return "DW_OP_lit11"; | |
8720 | case DW_OP_lit12: | |
8721 | return "DW_OP_lit12"; | |
8722 | case DW_OP_lit13: | |
8723 | return "DW_OP_lit13"; | |
8724 | case DW_OP_lit14: | |
8725 | return "DW_OP_lit14"; | |
8726 | case DW_OP_lit15: | |
8727 | return "DW_OP_lit15"; | |
8728 | case DW_OP_lit16: | |
8729 | return "DW_OP_lit16"; | |
8730 | case DW_OP_lit17: | |
8731 | return "DW_OP_lit17"; | |
8732 | case DW_OP_lit18: | |
8733 | return "DW_OP_lit18"; | |
8734 | case DW_OP_lit19: | |
8735 | return "DW_OP_lit19"; | |
8736 | case DW_OP_lit20: | |
8737 | return "DW_OP_lit20"; | |
8738 | case DW_OP_lit21: | |
8739 | return "DW_OP_lit21"; | |
8740 | case DW_OP_lit22: | |
8741 | return "DW_OP_lit22"; | |
8742 | case DW_OP_lit23: | |
8743 | return "DW_OP_lit23"; | |
8744 | case DW_OP_lit24: | |
8745 | return "DW_OP_lit24"; | |
8746 | case DW_OP_lit25: | |
8747 | return "DW_OP_lit25"; | |
8748 | case DW_OP_lit26: | |
8749 | return "DW_OP_lit26"; | |
8750 | case DW_OP_lit27: | |
8751 | return "DW_OP_lit27"; | |
8752 | case DW_OP_lit28: | |
8753 | return "DW_OP_lit28"; | |
8754 | case DW_OP_lit29: | |
8755 | return "DW_OP_lit29"; | |
8756 | case DW_OP_lit30: | |
8757 | return "DW_OP_lit30"; | |
8758 | case DW_OP_lit31: | |
8759 | return "DW_OP_lit31"; | |
8760 | case DW_OP_reg0: | |
8761 | return "DW_OP_reg0"; | |
8762 | case DW_OP_reg1: | |
8763 | return "DW_OP_reg1"; | |
8764 | case DW_OP_reg2: | |
8765 | return "DW_OP_reg2"; | |
8766 | case DW_OP_reg3: | |
8767 | return "DW_OP_reg3"; | |
8768 | case DW_OP_reg4: | |
8769 | return "DW_OP_reg4"; | |
8770 | case DW_OP_reg5: | |
8771 | return "DW_OP_reg5"; | |
8772 | case DW_OP_reg6: | |
8773 | return "DW_OP_reg6"; | |
8774 | case DW_OP_reg7: | |
8775 | return "DW_OP_reg7"; | |
8776 | case DW_OP_reg8: | |
8777 | return "DW_OP_reg8"; | |
8778 | case DW_OP_reg9: | |
8779 | return "DW_OP_reg9"; | |
8780 | case DW_OP_reg10: | |
8781 | return "DW_OP_reg10"; | |
8782 | case DW_OP_reg11: | |
8783 | return "DW_OP_reg11"; | |
8784 | case DW_OP_reg12: | |
8785 | return "DW_OP_reg12"; | |
8786 | case DW_OP_reg13: | |
8787 | return "DW_OP_reg13"; | |
8788 | case DW_OP_reg14: | |
8789 | return "DW_OP_reg14"; | |
8790 | case DW_OP_reg15: | |
8791 | return "DW_OP_reg15"; | |
8792 | case DW_OP_reg16: | |
8793 | return "DW_OP_reg16"; | |
8794 | case DW_OP_reg17: | |
8795 | return "DW_OP_reg17"; | |
8796 | case DW_OP_reg18: | |
8797 | return "DW_OP_reg18"; | |
8798 | case DW_OP_reg19: | |
8799 | return "DW_OP_reg19"; | |
8800 | case DW_OP_reg20: | |
8801 | return "DW_OP_reg20"; | |
8802 | case DW_OP_reg21: | |
8803 | return "DW_OP_reg21"; | |
8804 | case DW_OP_reg22: | |
8805 | return "DW_OP_reg22"; | |
8806 | case DW_OP_reg23: | |
8807 | return "DW_OP_reg23"; | |
8808 | case DW_OP_reg24: | |
8809 | return "DW_OP_reg24"; | |
8810 | case DW_OP_reg25: | |
8811 | return "DW_OP_reg25"; | |
8812 | case DW_OP_reg26: | |
8813 | return "DW_OP_reg26"; | |
8814 | case DW_OP_reg27: | |
8815 | return "DW_OP_reg27"; | |
8816 | case DW_OP_reg28: | |
8817 | return "DW_OP_reg28"; | |
8818 | case DW_OP_reg29: | |
8819 | return "DW_OP_reg29"; | |
8820 | case DW_OP_reg30: | |
8821 | return "DW_OP_reg30"; | |
8822 | case DW_OP_reg31: | |
8823 | return "DW_OP_reg31"; | |
8824 | case DW_OP_breg0: | |
8825 | return "DW_OP_breg0"; | |
8826 | case DW_OP_breg1: | |
8827 | return "DW_OP_breg1"; | |
8828 | case DW_OP_breg2: | |
8829 | return "DW_OP_breg2"; | |
8830 | case DW_OP_breg3: | |
8831 | return "DW_OP_breg3"; | |
8832 | case DW_OP_breg4: | |
8833 | return "DW_OP_breg4"; | |
8834 | case DW_OP_breg5: | |
8835 | return "DW_OP_breg5"; | |
8836 | case DW_OP_breg6: | |
8837 | return "DW_OP_breg6"; | |
8838 | case DW_OP_breg7: | |
8839 | return "DW_OP_breg7"; | |
8840 | case DW_OP_breg8: | |
8841 | return "DW_OP_breg8"; | |
8842 | case DW_OP_breg9: | |
8843 | return "DW_OP_breg9"; | |
8844 | case DW_OP_breg10: | |
8845 | return "DW_OP_breg10"; | |
8846 | case DW_OP_breg11: | |
8847 | return "DW_OP_breg11"; | |
8848 | case DW_OP_breg12: | |
8849 | return "DW_OP_breg12"; | |
8850 | case DW_OP_breg13: | |
8851 | return "DW_OP_breg13"; | |
8852 | case DW_OP_breg14: | |
8853 | return "DW_OP_breg14"; | |
8854 | case DW_OP_breg15: | |
8855 | return "DW_OP_breg15"; | |
8856 | case DW_OP_breg16: | |
8857 | return "DW_OP_breg16"; | |
8858 | case DW_OP_breg17: | |
8859 | return "DW_OP_breg17"; | |
8860 | case DW_OP_breg18: | |
8861 | return "DW_OP_breg18"; | |
8862 | case DW_OP_breg19: | |
8863 | return "DW_OP_breg19"; | |
8864 | case DW_OP_breg20: | |
8865 | return "DW_OP_breg20"; | |
8866 | case DW_OP_breg21: | |
8867 | return "DW_OP_breg21"; | |
8868 | case DW_OP_breg22: | |
8869 | return "DW_OP_breg22"; | |
8870 | case DW_OP_breg23: | |
8871 | return "DW_OP_breg23"; | |
8872 | case DW_OP_breg24: | |
8873 | return "DW_OP_breg24"; | |
8874 | case DW_OP_breg25: | |
8875 | return "DW_OP_breg25"; | |
8876 | case DW_OP_breg26: | |
8877 | return "DW_OP_breg26"; | |
8878 | case DW_OP_breg27: | |
8879 | return "DW_OP_breg27"; | |
8880 | case DW_OP_breg28: | |
8881 | return "DW_OP_breg28"; | |
8882 | case DW_OP_breg29: | |
8883 | return "DW_OP_breg29"; | |
8884 | case DW_OP_breg30: | |
8885 | return "DW_OP_breg30"; | |
8886 | case DW_OP_breg31: | |
8887 | return "DW_OP_breg31"; | |
8888 | case DW_OP_regx: | |
8889 | return "DW_OP_regx"; | |
8890 | case DW_OP_fbreg: | |
8891 | return "DW_OP_fbreg"; | |
8892 | case DW_OP_bregx: | |
8893 | return "DW_OP_bregx"; | |
8894 | case DW_OP_piece: | |
8895 | return "DW_OP_piece"; | |
8896 | case DW_OP_deref_size: | |
8897 | return "DW_OP_deref_size"; | |
8898 | case DW_OP_xderef_size: | |
8899 | return "DW_OP_xderef_size"; | |
8900 | case DW_OP_nop: | |
8901 | return "DW_OP_nop"; | |
b7619582 | 8902 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8903 | case DW_OP_push_object_address: |
8904 | return "DW_OP_push_object_address"; | |
8905 | case DW_OP_call2: | |
8906 | return "DW_OP_call2"; | |
8907 | case DW_OP_call4: | |
8908 | return "DW_OP_call4"; | |
8909 | case DW_OP_call_ref: | |
8910 | return "DW_OP_call_ref"; | |
b7619582 GF |
8911 | /* GNU extensions. */ |
8912 | case DW_OP_form_tls_address: | |
8913 | return "DW_OP_form_tls_address"; | |
8914 | case DW_OP_call_frame_cfa: | |
8915 | return "DW_OP_call_frame_cfa"; | |
8916 | case DW_OP_bit_piece: | |
8917 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8918 | case DW_OP_GNU_push_tls_address: |
8919 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
8920 | case DW_OP_GNU_uninit: |
8921 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
8922 | /* HP extensions. */ |
8923 | case DW_OP_HP_is_value: | |
8924 | return "DW_OP_HP_is_value"; | |
8925 | case DW_OP_HP_fltconst4: | |
8926 | return "DW_OP_HP_fltconst4"; | |
8927 | case DW_OP_HP_fltconst8: | |
8928 | return "DW_OP_HP_fltconst8"; | |
8929 | case DW_OP_HP_mod_range: | |
8930 | return "DW_OP_HP_mod_range"; | |
8931 | case DW_OP_HP_unmod_range: | |
8932 | return "DW_OP_HP_unmod_range"; | |
8933 | case DW_OP_HP_tls: | |
8934 | return "DW_OP_HP_tls"; | |
c906108c SS |
8935 | default: |
8936 | return "OP_<unknown>"; | |
8937 | } | |
8938 | } | |
8939 | ||
8940 | static char * | |
fba45db2 | 8941 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8942 | { |
8943 | if (mybool) | |
8944 | return "TRUE"; | |
8945 | else | |
8946 | return "FALSE"; | |
8947 | } | |
8948 | ||
8949 | /* Convert a DWARF type code into its string name. */ | |
8950 | ||
8951 | static char * | |
aa1ee363 | 8952 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8953 | { |
8954 | switch (enc) | |
8955 | { | |
b7619582 GF |
8956 | case DW_ATE_void: |
8957 | return "DW_ATE_void"; | |
c906108c SS |
8958 | case DW_ATE_address: |
8959 | return "DW_ATE_address"; | |
8960 | case DW_ATE_boolean: | |
8961 | return "DW_ATE_boolean"; | |
8962 | case DW_ATE_complex_float: | |
8963 | return "DW_ATE_complex_float"; | |
8964 | case DW_ATE_float: | |
8965 | return "DW_ATE_float"; | |
8966 | case DW_ATE_signed: | |
8967 | return "DW_ATE_signed"; | |
8968 | case DW_ATE_signed_char: | |
8969 | return "DW_ATE_signed_char"; | |
8970 | case DW_ATE_unsigned: | |
8971 | return "DW_ATE_unsigned"; | |
8972 | case DW_ATE_unsigned_char: | |
8973 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8974 | /* DWARF 3. */ |
d9fa45fe DC |
8975 | case DW_ATE_imaginary_float: |
8976 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8977 | case DW_ATE_packed_decimal: |
8978 | return "DW_ATE_packed_decimal"; | |
8979 | case DW_ATE_numeric_string: | |
8980 | return "DW_ATE_numeric_string"; | |
8981 | case DW_ATE_edited: | |
8982 | return "DW_ATE_edited"; | |
8983 | case DW_ATE_signed_fixed: | |
8984 | return "DW_ATE_signed_fixed"; | |
8985 | case DW_ATE_unsigned_fixed: | |
8986 | return "DW_ATE_unsigned_fixed"; | |
8987 | case DW_ATE_decimal_float: | |
8988 | return "DW_ATE_decimal_float"; | |
8989 | /* HP extensions. */ | |
8990 | case DW_ATE_HP_float80: | |
8991 | return "DW_ATE_HP_float80"; | |
8992 | case DW_ATE_HP_complex_float80: | |
8993 | return "DW_ATE_HP_complex_float80"; | |
8994 | case DW_ATE_HP_float128: | |
8995 | return "DW_ATE_HP_float128"; | |
8996 | case DW_ATE_HP_complex_float128: | |
8997 | return "DW_ATE_HP_complex_float128"; | |
8998 | case DW_ATE_HP_floathpintel: | |
8999 | return "DW_ATE_HP_floathpintel"; | |
9000 | case DW_ATE_HP_imaginary_float80: | |
9001 | return "DW_ATE_HP_imaginary_float80"; | |
9002 | case DW_ATE_HP_imaginary_float128: | |
9003 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
9004 | default: |
9005 | return "DW_ATE_<unknown>"; | |
9006 | } | |
9007 | } | |
9008 | ||
9009 | /* Convert a DWARF call frame info operation to its string name. */ | |
9010 | ||
9011 | #if 0 | |
9012 | static char * | |
aa1ee363 | 9013 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
9014 | { |
9015 | switch (cfi_opc) | |
9016 | { | |
9017 | case DW_CFA_advance_loc: | |
9018 | return "DW_CFA_advance_loc"; | |
9019 | case DW_CFA_offset: | |
9020 | return "DW_CFA_offset"; | |
9021 | case DW_CFA_restore: | |
9022 | return "DW_CFA_restore"; | |
9023 | case DW_CFA_nop: | |
9024 | return "DW_CFA_nop"; | |
9025 | case DW_CFA_set_loc: | |
9026 | return "DW_CFA_set_loc"; | |
9027 | case DW_CFA_advance_loc1: | |
9028 | return "DW_CFA_advance_loc1"; | |
9029 | case DW_CFA_advance_loc2: | |
9030 | return "DW_CFA_advance_loc2"; | |
9031 | case DW_CFA_advance_loc4: | |
9032 | return "DW_CFA_advance_loc4"; | |
9033 | case DW_CFA_offset_extended: | |
9034 | return "DW_CFA_offset_extended"; | |
9035 | case DW_CFA_restore_extended: | |
9036 | return "DW_CFA_restore_extended"; | |
9037 | case DW_CFA_undefined: | |
9038 | return "DW_CFA_undefined"; | |
9039 | case DW_CFA_same_value: | |
9040 | return "DW_CFA_same_value"; | |
9041 | case DW_CFA_register: | |
9042 | return "DW_CFA_register"; | |
9043 | case DW_CFA_remember_state: | |
9044 | return "DW_CFA_remember_state"; | |
9045 | case DW_CFA_restore_state: | |
9046 | return "DW_CFA_restore_state"; | |
9047 | case DW_CFA_def_cfa: | |
9048 | return "DW_CFA_def_cfa"; | |
9049 | case DW_CFA_def_cfa_register: | |
9050 | return "DW_CFA_def_cfa_register"; | |
9051 | case DW_CFA_def_cfa_offset: | |
9052 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 9053 | /* DWARF 3. */ |
985cb1a3 JM |
9054 | case DW_CFA_def_cfa_expression: |
9055 | return "DW_CFA_def_cfa_expression"; | |
9056 | case DW_CFA_expression: | |
9057 | return "DW_CFA_expression"; | |
9058 | case DW_CFA_offset_extended_sf: | |
9059 | return "DW_CFA_offset_extended_sf"; | |
9060 | case DW_CFA_def_cfa_sf: | |
9061 | return "DW_CFA_def_cfa_sf"; | |
9062 | case DW_CFA_def_cfa_offset_sf: | |
9063 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
9064 | case DW_CFA_val_offset: |
9065 | return "DW_CFA_val_offset"; | |
9066 | case DW_CFA_val_offset_sf: | |
9067 | return "DW_CFA_val_offset_sf"; | |
9068 | case DW_CFA_val_expression: | |
9069 | return "DW_CFA_val_expression"; | |
9070 | /* SGI/MIPS specific. */ | |
c906108c SS |
9071 | case DW_CFA_MIPS_advance_loc8: |
9072 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 9073 | /* GNU extensions. */ |
985cb1a3 JM |
9074 | case DW_CFA_GNU_window_save: |
9075 | return "DW_CFA_GNU_window_save"; | |
9076 | case DW_CFA_GNU_args_size: | |
9077 | return "DW_CFA_GNU_args_size"; | |
9078 | case DW_CFA_GNU_negative_offset_extended: | |
9079 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
9080 | default: |
9081 | return "DW_CFA_<unknown>"; | |
9082 | } | |
9083 | } | |
9084 | #endif | |
9085 | ||
f9aca02d | 9086 | static void |
fba45db2 | 9087 | dump_die (struct die_info *die) |
c906108c SS |
9088 | { |
9089 | unsigned int i; | |
9090 | ||
48cd0caa | 9091 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 9092 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 9093 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 9094 | dwarf_bool_name (die->child != NULL)); |
c906108c | 9095 | |
48cd0caa | 9096 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
9097 | for (i = 0; i < die->num_attrs; ++i) |
9098 | { | |
48cd0caa | 9099 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
9100 | dwarf_attr_name (die->attrs[i].name), |
9101 | dwarf_form_name (die->attrs[i].form)); | |
9102 | switch (die->attrs[i].form) | |
9103 | { | |
9104 | case DW_FORM_ref_addr: | |
9105 | case DW_FORM_addr: | |
48cd0caa | 9106 | fprintf_unfiltered (gdb_stderr, "address: "); |
ed49a04f | 9107 | fputs_filtered (paddress (DW_ADDR (&die->attrs[i])), gdb_stderr); |
c906108c SS |
9108 | break; |
9109 | case DW_FORM_block2: | |
9110 | case DW_FORM_block4: | |
9111 | case DW_FORM_block: | |
9112 | case DW_FORM_block1: | |
48cd0caa | 9113 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 9114 | break; |
10b3939b DJ |
9115 | case DW_FORM_ref1: |
9116 | case DW_FORM_ref2: | |
9117 | case DW_FORM_ref4: | |
9118 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
9119 | (long) (DW_ADDR (&die->attrs[i]))); | |
9120 | break; | |
c906108c SS |
9121 | case DW_FORM_data1: |
9122 | case DW_FORM_data2: | |
9123 | case DW_FORM_data4: | |
ce5d95e1 | 9124 | case DW_FORM_data8: |
c906108c SS |
9125 | case DW_FORM_udata: |
9126 | case DW_FORM_sdata: | |
48cd0caa | 9127 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
9128 | break; |
9129 | case DW_FORM_string: | |
4bdf3d34 | 9130 | case DW_FORM_strp: |
48cd0caa | 9131 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 9132 | DW_STRING (&die->attrs[i]) |
c5aa993b | 9133 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
9134 | break; |
9135 | case DW_FORM_flag: | |
9136 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 9137 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 9138 | else |
48cd0caa | 9139 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 9140 | break; |
a8329558 KW |
9141 | case DW_FORM_indirect: |
9142 | /* the reader will have reduced the indirect form to | |
9143 | the "base form" so this form should not occur */ | |
48cd0caa | 9144 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 9145 | break; |
c906108c | 9146 | default: |
48cd0caa | 9147 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 9148 | die->attrs[i].form); |
c906108c | 9149 | } |
48cd0caa | 9150 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
9151 | } |
9152 | } | |
9153 | ||
f9aca02d | 9154 | static void |
fba45db2 | 9155 | dump_die_list (struct die_info *die) |
c906108c SS |
9156 | { |
9157 | while (die) | |
9158 | { | |
9159 | dump_die (die); | |
639d11d3 DC |
9160 | if (die->child != NULL) |
9161 | dump_die_list (die->child); | |
9162 | if (die->sibling != NULL) | |
9163 | dump_die_list (die->sibling); | |
c906108c SS |
9164 | } |
9165 | } | |
9166 | ||
f9aca02d | 9167 | static void |
10b3939b DJ |
9168 | store_in_ref_table (unsigned int offset, struct die_info *die, |
9169 | struct dwarf2_cu *cu) | |
c906108c SS |
9170 | { |
9171 | int h; | |
9172 | struct die_info *old; | |
9173 | ||
9174 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 9175 | old = cu->die_ref_table[h]; |
c906108c | 9176 | die->next_ref = old; |
10b3939b | 9177 | cu->die_ref_table[h] = die; |
c906108c SS |
9178 | } |
9179 | ||
9180 | static unsigned int | |
e142c38c | 9181 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
9182 | { |
9183 | unsigned int result = 0; | |
9184 | ||
9185 | switch (attr->form) | |
9186 | { | |
9187 | case DW_FORM_ref_addr: | |
c906108c SS |
9188 | case DW_FORM_ref1: |
9189 | case DW_FORM_ref2: | |
9190 | case DW_FORM_ref4: | |
613e1657 | 9191 | case DW_FORM_ref8: |
c906108c | 9192 | case DW_FORM_ref_udata: |
10b3939b | 9193 | result = DW_ADDR (attr); |
c906108c SS |
9194 | break; |
9195 | default: | |
4d3c2250 | 9196 | complaint (&symfile_complaints, |
e2e0b3e5 | 9197 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 9198 | dwarf_form_name (attr->form)); |
c906108c SS |
9199 | } |
9200 | return result; | |
9201 | } | |
9202 | ||
a02abb62 JB |
9203 | /* Return the constant value held by the given attribute. Return -1 |
9204 | if the value held by the attribute is not constant. */ | |
9205 | ||
9206 | static int | |
9207 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
9208 | { | |
9209 | if (attr->form == DW_FORM_sdata) | |
9210 | return DW_SND (attr); | |
9211 | else if (attr->form == DW_FORM_udata | |
9212 | || attr->form == DW_FORM_data1 | |
9213 | || attr->form == DW_FORM_data2 | |
9214 | || attr->form == DW_FORM_data4 | |
9215 | || attr->form == DW_FORM_data8) | |
9216 | return DW_UNSND (attr); | |
9217 | else | |
9218 | { | |
e2e0b3e5 | 9219 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
9220 | dwarf_form_name (attr->form)); |
9221 | return default_value; | |
9222 | } | |
9223 | } | |
9224 | ||
f9aca02d | 9225 | static struct die_info * |
10b3939b DJ |
9226 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
9227 | struct dwarf2_cu *cu) | |
c906108c SS |
9228 | { |
9229 | struct die_info *die; | |
10b3939b | 9230 | unsigned int offset; |
c906108c | 9231 | int h; |
10b3939b DJ |
9232 | struct die_info temp_die; |
9233 | struct dwarf2_cu *target_cu; | |
9234 | ||
9235 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
9236 | ||
9237 | if (DW_ADDR (attr) < cu->header.offset | |
9238 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
9239 | { | |
9240 | struct dwarf2_per_cu_data *per_cu; | |
9241 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
9242 | cu->objfile); | |
9243 | target_cu = per_cu->cu; | |
9244 | } | |
9245 | else | |
9246 | target_cu = cu; | |
c906108c SS |
9247 | |
9248 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 9249 | die = target_cu->die_ref_table[h]; |
c906108c SS |
9250 | while (die) |
9251 | { | |
9252 | if (die->offset == offset) | |
10b3939b | 9253 | return die; |
c906108c SS |
9254 | die = die->next_ref; |
9255 | } | |
10b3939b | 9256 | |
8a3fe4f8 AC |
9257 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
9258 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
9259 | (long) src_die->offset, (long) offset, cu->objfile->name); |
9260 | ||
c906108c SS |
9261 | return NULL; |
9262 | } | |
9263 | ||
c906108c SS |
9264 | /* Decode simple location descriptions. |
9265 | Given a pointer to a dwarf block that defines a location, compute | |
9266 | the location and return the value. | |
9267 | ||
4cecd739 DJ |
9268 | NOTE drow/2003-11-18: This function is called in two situations |
9269 | now: for the address of static or global variables (partial symbols | |
9270 | only) and for offsets into structures which are expected to be | |
9271 | (more or less) constant. The partial symbol case should go away, | |
9272 | and only the constant case should remain. That will let this | |
9273 | function complain more accurately. A few special modes are allowed | |
9274 | without complaint for global variables (for instance, global | |
9275 | register values and thread-local values). | |
c906108c SS |
9276 | |
9277 | A location description containing no operations indicates that the | |
4cecd739 | 9278 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
9279 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
9280 | callers will only want a very basic result and this can become a | |
9281 | complaint. | |
c906108c | 9282 | |
c906108c SS |
9283 | Note that stack[0] is unused except as a default error return. |
9284 | Note that stack overflow is not yet handled. */ | |
9285 | ||
9286 | static CORE_ADDR | |
e7c27a73 | 9287 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 9288 | { |
e7c27a73 DJ |
9289 | struct objfile *objfile = cu->objfile; |
9290 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
9291 | int i; |
9292 | int size = blk->size; | |
fe1b8b76 | 9293 | gdb_byte *data = blk->data; |
c906108c SS |
9294 | CORE_ADDR stack[64]; |
9295 | int stacki; | |
9296 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 9297 | gdb_byte op; |
c906108c SS |
9298 | |
9299 | i = 0; | |
9300 | stacki = 0; | |
9301 | stack[stacki] = 0; | |
c906108c SS |
9302 | |
9303 | while (i < size) | |
9304 | { | |
c906108c SS |
9305 | op = data[i++]; |
9306 | switch (op) | |
9307 | { | |
f1bea926 JM |
9308 | case DW_OP_lit0: |
9309 | case DW_OP_lit1: | |
9310 | case DW_OP_lit2: | |
9311 | case DW_OP_lit3: | |
9312 | case DW_OP_lit4: | |
9313 | case DW_OP_lit5: | |
9314 | case DW_OP_lit6: | |
9315 | case DW_OP_lit7: | |
9316 | case DW_OP_lit8: | |
9317 | case DW_OP_lit9: | |
9318 | case DW_OP_lit10: | |
9319 | case DW_OP_lit11: | |
9320 | case DW_OP_lit12: | |
9321 | case DW_OP_lit13: | |
9322 | case DW_OP_lit14: | |
9323 | case DW_OP_lit15: | |
9324 | case DW_OP_lit16: | |
9325 | case DW_OP_lit17: | |
9326 | case DW_OP_lit18: | |
9327 | case DW_OP_lit19: | |
9328 | case DW_OP_lit20: | |
9329 | case DW_OP_lit21: | |
9330 | case DW_OP_lit22: | |
9331 | case DW_OP_lit23: | |
9332 | case DW_OP_lit24: | |
9333 | case DW_OP_lit25: | |
9334 | case DW_OP_lit26: | |
9335 | case DW_OP_lit27: | |
9336 | case DW_OP_lit28: | |
9337 | case DW_OP_lit29: | |
9338 | case DW_OP_lit30: | |
9339 | case DW_OP_lit31: | |
9340 | stack[++stacki] = op - DW_OP_lit0; | |
9341 | break; | |
9342 | ||
c906108c SS |
9343 | case DW_OP_reg0: |
9344 | case DW_OP_reg1: | |
9345 | case DW_OP_reg2: | |
9346 | case DW_OP_reg3: | |
9347 | case DW_OP_reg4: | |
9348 | case DW_OP_reg5: | |
9349 | case DW_OP_reg6: | |
9350 | case DW_OP_reg7: | |
9351 | case DW_OP_reg8: | |
9352 | case DW_OP_reg9: | |
9353 | case DW_OP_reg10: | |
9354 | case DW_OP_reg11: | |
9355 | case DW_OP_reg12: | |
9356 | case DW_OP_reg13: | |
9357 | case DW_OP_reg14: | |
9358 | case DW_OP_reg15: | |
9359 | case DW_OP_reg16: | |
9360 | case DW_OP_reg17: | |
9361 | case DW_OP_reg18: | |
9362 | case DW_OP_reg19: | |
9363 | case DW_OP_reg20: | |
9364 | case DW_OP_reg21: | |
9365 | case DW_OP_reg22: | |
9366 | case DW_OP_reg23: | |
9367 | case DW_OP_reg24: | |
9368 | case DW_OP_reg25: | |
9369 | case DW_OP_reg26: | |
9370 | case DW_OP_reg27: | |
9371 | case DW_OP_reg28: | |
9372 | case DW_OP_reg29: | |
9373 | case DW_OP_reg30: | |
9374 | case DW_OP_reg31: | |
c906108c | 9375 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9376 | if (i < size) |
9377 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9378 | break; |
9379 | ||
9380 | case DW_OP_regx: | |
c906108c SS |
9381 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9382 | i += bytes_read; | |
c906108c | 9383 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9384 | if (i < size) |
9385 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9386 | break; |
9387 | ||
9388 | case DW_OP_addr: | |
107d2387 | 9389 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9390 | cu, &bytes_read); |
107d2387 | 9391 | i += bytes_read; |
c906108c SS |
9392 | break; |
9393 | ||
9394 | case DW_OP_const1u: | |
9395 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9396 | i += 1; | |
9397 | break; | |
9398 | ||
9399 | case DW_OP_const1s: | |
9400 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9401 | i += 1; | |
9402 | break; | |
9403 | ||
9404 | case DW_OP_const2u: | |
9405 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9406 | i += 2; | |
9407 | break; | |
9408 | ||
9409 | case DW_OP_const2s: | |
9410 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9411 | i += 2; | |
9412 | break; | |
9413 | ||
9414 | case DW_OP_const4u: | |
9415 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9416 | i += 4; | |
9417 | break; | |
9418 | ||
9419 | case DW_OP_const4s: | |
9420 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9421 | i += 4; | |
9422 | break; | |
9423 | ||
9424 | case DW_OP_constu: | |
9425 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9426 | &bytes_read); |
c906108c SS |
9427 | i += bytes_read; |
9428 | break; | |
9429 | ||
9430 | case DW_OP_consts: | |
9431 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9432 | i += bytes_read; | |
9433 | break; | |
9434 | ||
f1bea926 JM |
9435 | case DW_OP_dup: |
9436 | stack[stacki + 1] = stack[stacki]; | |
9437 | stacki++; | |
9438 | break; | |
9439 | ||
c906108c SS |
9440 | case DW_OP_plus: |
9441 | stack[stacki - 1] += stack[stacki]; | |
9442 | stacki--; | |
9443 | break; | |
9444 | ||
9445 | case DW_OP_plus_uconst: | |
9446 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9447 | i += bytes_read; | |
9448 | break; | |
9449 | ||
9450 | case DW_OP_minus: | |
f1bea926 | 9451 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9452 | stacki--; |
9453 | break; | |
9454 | ||
7a292a7a | 9455 | case DW_OP_deref: |
7a292a7a | 9456 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9457 | this using GDB's address_class enum. This is valid for partial |
9458 | global symbols, although the variable's address will be bogus | |
9459 | in the psymtab. */ | |
7a292a7a | 9460 | if (i < size) |
4d3c2250 | 9461 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9462 | break; |
9463 | ||
9d774e44 | 9464 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9465 | /* The top of the stack has the offset from the beginning |
9466 | of the thread control block at which the variable is located. */ | |
9467 | /* Nothing should follow this operator, so the top of stack would | |
9468 | be returned. */ | |
4cecd739 DJ |
9469 | /* This is valid for partial global symbols, but the variable's |
9470 | address will be bogus in the psymtab. */ | |
9d774e44 | 9471 | if (i < size) |
4d3c2250 | 9472 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9473 | break; |
9474 | ||
42be36b3 CT |
9475 | case DW_OP_GNU_uninit: |
9476 | break; | |
9477 | ||
c906108c | 9478 | default: |
e2e0b3e5 | 9479 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9480 | dwarf_stack_op_name (op)); |
c906108c SS |
9481 | return (stack[stacki]); |
9482 | } | |
9483 | } | |
9484 | return (stack[stacki]); | |
9485 | } | |
9486 | ||
9487 | /* memory allocation interface */ | |
9488 | ||
c906108c | 9489 | static struct dwarf_block * |
7b5a2f43 | 9490 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9491 | { |
9492 | struct dwarf_block *blk; | |
9493 | ||
9494 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9495 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9496 | return (blk); |
9497 | } | |
9498 | ||
9499 | static struct abbrev_info * | |
f3dd6933 | 9500 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9501 | { |
9502 | struct abbrev_info *abbrev; | |
9503 | ||
f3dd6933 DJ |
9504 | abbrev = (struct abbrev_info *) |
9505 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9506 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9507 | return (abbrev); | |
9508 | } | |
9509 | ||
9510 | static struct die_info * | |
fba45db2 | 9511 | dwarf_alloc_die (void) |
c906108c SS |
9512 | { |
9513 | struct die_info *die; | |
9514 | ||
9515 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
9516 | memset (die, 0, sizeof (struct die_info)); | |
9517 | return (die); | |
9518 | } | |
2e276125 JB |
9519 | |
9520 | \f | |
9521 | /* Macro support. */ | |
9522 | ||
9523 | ||
9524 | /* Return the full name of file number I in *LH's file name table. | |
9525 | Use COMP_DIR as the name of the current directory of the | |
9526 | compilation. The result is allocated using xmalloc; the caller is | |
9527 | responsible for freeing it. */ | |
9528 | static char * | |
9529 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9530 | { | |
6a83a1e6 EZ |
9531 | /* Is the file number a valid index into the line header's file name |
9532 | table? Remember that file numbers start with one, not zero. */ | |
9533 | if (1 <= file && file <= lh->num_file_names) | |
9534 | { | |
9535 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9536 | |
6a83a1e6 EZ |
9537 | if (IS_ABSOLUTE_PATH (fe->name)) |
9538 | return xstrdup (fe->name); | |
9539 | else | |
9540 | { | |
9541 | const char *dir; | |
9542 | int dir_len; | |
9543 | char *full_name; | |
9544 | ||
9545 | if (fe->dir_index) | |
9546 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9547 | else | |
9548 | dir = comp_dir; | |
9549 | ||
9550 | if (dir) | |
9551 | { | |
9552 | dir_len = strlen (dir); | |
9553 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9554 | strcpy (full_name, dir); | |
9555 | full_name[dir_len] = '/'; | |
9556 | strcpy (full_name + dir_len + 1, fe->name); | |
9557 | return full_name; | |
9558 | } | |
9559 | else | |
9560 | return xstrdup (fe->name); | |
9561 | } | |
9562 | } | |
2e276125 JB |
9563 | else |
9564 | { | |
6a83a1e6 EZ |
9565 | /* The compiler produced a bogus file number. We can at least |
9566 | record the macro definitions made in the file, even if we | |
9567 | won't be able to find the file by name. */ | |
9568 | char fake_name[80]; | |
9569 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9570 | |
6a83a1e6 EZ |
9571 | complaint (&symfile_complaints, |
9572 | _("bad file number in macro information (%d)"), | |
9573 | file); | |
2e276125 | 9574 | |
6a83a1e6 | 9575 | return xstrdup (fake_name); |
2e276125 JB |
9576 | } |
9577 | } | |
9578 | ||
9579 | ||
9580 | static struct macro_source_file * | |
9581 | macro_start_file (int file, int line, | |
9582 | struct macro_source_file *current_file, | |
9583 | const char *comp_dir, | |
9584 | struct line_header *lh, struct objfile *objfile) | |
9585 | { | |
9586 | /* The full name of this source file. */ | |
9587 | char *full_name = file_full_name (file, lh, comp_dir); | |
9588 | ||
9589 | /* We don't create a macro table for this compilation unit | |
9590 | at all until we actually get a filename. */ | |
9591 | if (! pending_macros) | |
4a146b47 | 9592 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9593 | objfile->macro_cache); |
2e276125 JB |
9594 | |
9595 | if (! current_file) | |
9596 | /* If we have no current file, then this must be the start_file | |
9597 | directive for the compilation unit's main source file. */ | |
9598 | current_file = macro_set_main (pending_macros, full_name); | |
9599 | else | |
9600 | current_file = macro_include (current_file, line, full_name); | |
9601 | ||
9602 | xfree (full_name); | |
9603 | ||
9604 | return current_file; | |
9605 | } | |
9606 | ||
9607 | ||
9608 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9609 | followed by a null byte. */ | |
9610 | static char * | |
9611 | copy_string (const char *buf, int len) | |
9612 | { | |
9613 | char *s = xmalloc (len + 1); | |
9614 | memcpy (s, buf, len); | |
9615 | s[len] = '\0'; | |
9616 | ||
9617 | return s; | |
9618 | } | |
9619 | ||
9620 | ||
9621 | static const char * | |
9622 | consume_improper_spaces (const char *p, const char *body) | |
9623 | { | |
9624 | if (*p == ' ') | |
9625 | { | |
4d3c2250 | 9626 | complaint (&symfile_complaints, |
e2e0b3e5 | 9627 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9628 | body); |
2e276125 JB |
9629 | |
9630 | while (*p == ' ') | |
9631 | p++; | |
9632 | } | |
9633 | ||
9634 | return p; | |
9635 | } | |
9636 | ||
9637 | ||
9638 | static void | |
9639 | parse_macro_definition (struct macro_source_file *file, int line, | |
9640 | const char *body) | |
9641 | { | |
9642 | const char *p; | |
9643 | ||
9644 | /* The body string takes one of two forms. For object-like macro | |
9645 | definitions, it should be: | |
9646 | ||
9647 | <macro name> " " <definition> | |
9648 | ||
9649 | For function-like macro definitions, it should be: | |
9650 | ||
9651 | <macro name> "() " <definition> | |
9652 | or | |
9653 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9654 | ||
9655 | Spaces may appear only where explicitly indicated, and in the | |
9656 | <definition>. | |
9657 | ||
9658 | The Dwarf 2 spec says that an object-like macro's name is always | |
9659 | followed by a space, but versions of GCC around March 2002 omit | |
9660 | the space when the macro's definition is the empty string. | |
9661 | ||
9662 | The Dwarf 2 spec says that there should be no spaces between the | |
9663 | formal arguments in a function-like macro's formal argument list, | |
9664 | but versions of GCC around March 2002 include spaces after the | |
9665 | commas. */ | |
9666 | ||
9667 | ||
9668 | /* Find the extent of the macro name. The macro name is terminated | |
9669 | by either a space or null character (for an object-like macro) or | |
9670 | an opening paren (for a function-like macro). */ | |
9671 | for (p = body; *p; p++) | |
9672 | if (*p == ' ' || *p == '(') | |
9673 | break; | |
9674 | ||
9675 | if (*p == ' ' || *p == '\0') | |
9676 | { | |
9677 | /* It's an object-like macro. */ | |
9678 | int name_len = p - body; | |
9679 | char *name = copy_string (body, name_len); | |
9680 | const char *replacement; | |
9681 | ||
9682 | if (*p == ' ') | |
9683 | replacement = body + name_len + 1; | |
9684 | else | |
9685 | { | |
4d3c2250 | 9686 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9687 | replacement = body + name_len; |
9688 | } | |
9689 | ||
9690 | macro_define_object (file, line, name, replacement); | |
9691 | ||
9692 | xfree (name); | |
9693 | } | |
9694 | else if (*p == '(') | |
9695 | { | |
9696 | /* It's a function-like macro. */ | |
9697 | char *name = copy_string (body, p - body); | |
9698 | int argc = 0; | |
9699 | int argv_size = 1; | |
9700 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9701 | ||
9702 | p++; | |
9703 | ||
9704 | p = consume_improper_spaces (p, body); | |
9705 | ||
9706 | /* Parse the formal argument list. */ | |
9707 | while (*p && *p != ')') | |
9708 | { | |
9709 | /* Find the extent of the current argument name. */ | |
9710 | const char *arg_start = p; | |
9711 | ||
9712 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9713 | p++; | |
9714 | ||
9715 | if (! *p || p == arg_start) | |
4d3c2250 | 9716 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9717 | else |
9718 | { | |
9719 | /* Make sure argv has room for the new argument. */ | |
9720 | if (argc >= argv_size) | |
9721 | { | |
9722 | argv_size *= 2; | |
9723 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9724 | } | |
9725 | ||
9726 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9727 | } | |
9728 | ||
9729 | p = consume_improper_spaces (p, body); | |
9730 | ||
9731 | /* Consume the comma, if present. */ | |
9732 | if (*p == ',') | |
9733 | { | |
9734 | p++; | |
9735 | ||
9736 | p = consume_improper_spaces (p, body); | |
9737 | } | |
9738 | } | |
9739 | ||
9740 | if (*p == ')') | |
9741 | { | |
9742 | p++; | |
9743 | ||
9744 | if (*p == ' ') | |
9745 | /* Perfectly formed definition, no complaints. */ | |
9746 | macro_define_function (file, line, name, | |
9747 | argc, (const char **) argv, | |
9748 | p + 1); | |
9749 | else if (*p == '\0') | |
9750 | { | |
9751 | /* Complain, but do define it. */ | |
4d3c2250 | 9752 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9753 | macro_define_function (file, line, name, |
9754 | argc, (const char **) argv, | |
9755 | p); | |
9756 | } | |
9757 | else | |
9758 | /* Just complain. */ | |
4d3c2250 | 9759 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9760 | } |
9761 | else | |
9762 | /* Just complain. */ | |
4d3c2250 | 9763 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9764 | |
9765 | xfree (name); | |
9766 | { | |
9767 | int i; | |
9768 | ||
9769 | for (i = 0; i < argc; i++) | |
9770 | xfree (argv[i]); | |
9771 | } | |
9772 | xfree (argv); | |
9773 | } | |
9774 | else | |
4d3c2250 | 9775 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9776 | } |
9777 | ||
9778 | ||
9779 | static void | |
9780 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9781 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9782 | struct dwarf2_cu *cu) |
2e276125 | 9783 | { |
fe1b8b76 | 9784 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9785 | struct macro_source_file *current_file = 0; |
9786 | ||
6502dd73 | 9787 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9788 | { |
e2e0b3e5 | 9789 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9790 | return; |
9791 | } | |
9792 | ||
6502dd73 DJ |
9793 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9794 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9795 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9796 | |
9797 | for (;;) | |
9798 | { | |
9799 | enum dwarf_macinfo_record_type macinfo_type; | |
9800 | ||
9801 | /* Do we at least have room for a macinfo type byte? */ | |
9802 | if (mac_ptr >= mac_end) | |
9803 | { | |
4d3c2250 | 9804 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9805 | return; |
9806 | } | |
9807 | ||
9808 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9809 | mac_ptr++; | |
9810 | ||
9811 | switch (macinfo_type) | |
9812 | { | |
9813 | /* A zero macinfo type indicates the end of the macro | |
9814 | information. */ | |
9815 | case 0: | |
9816 | return; | |
9817 | ||
9818 | case DW_MACINFO_define: | |
9819 | case DW_MACINFO_undef: | |
9820 | { | |
891d2f0b | 9821 | unsigned int bytes_read; |
2e276125 JB |
9822 | int line; |
9823 | char *body; | |
9824 | ||
9825 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9826 | mac_ptr += bytes_read; | |
9827 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9828 | mac_ptr += bytes_read; | |
9829 | ||
9830 | if (! current_file) | |
4d3c2250 | 9831 | complaint (&symfile_complaints, |
e2e0b3e5 | 9832 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9833 | macinfo_type == |
9834 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9835 | DW_MACINFO_undef ? "undefinition" : | |
9836 | "something-or-other", body); | |
2e276125 JB |
9837 | else |
9838 | { | |
9839 | if (macinfo_type == DW_MACINFO_define) | |
9840 | parse_macro_definition (current_file, line, body); | |
9841 | else if (macinfo_type == DW_MACINFO_undef) | |
9842 | macro_undef (current_file, line, body); | |
9843 | } | |
9844 | } | |
9845 | break; | |
9846 | ||
9847 | case DW_MACINFO_start_file: | |
9848 | { | |
891d2f0b | 9849 | unsigned int bytes_read; |
2e276125 JB |
9850 | int line, file; |
9851 | ||
9852 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9853 | mac_ptr += bytes_read; | |
9854 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9855 | mac_ptr += bytes_read; | |
9856 | ||
9857 | current_file = macro_start_file (file, line, | |
9858 | current_file, comp_dir, | |
e7c27a73 | 9859 | lh, cu->objfile); |
2e276125 JB |
9860 | } |
9861 | break; | |
9862 | ||
9863 | case DW_MACINFO_end_file: | |
9864 | if (! current_file) | |
4d3c2250 | 9865 | complaint (&symfile_complaints, |
e2e0b3e5 | 9866 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9867 | else |
9868 | { | |
9869 | current_file = current_file->included_by; | |
9870 | if (! current_file) | |
9871 | { | |
9872 | enum dwarf_macinfo_record_type next_type; | |
9873 | ||
9874 | /* GCC circa March 2002 doesn't produce the zero | |
9875 | type byte marking the end of the compilation | |
9876 | unit. Complain if it's not there, but exit no | |
9877 | matter what. */ | |
9878 | ||
9879 | /* Do we at least have room for a macinfo type byte? */ | |
9880 | if (mac_ptr >= mac_end) | |
9881 | { | |
4d3c2250 | 9882 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9883 | return; |
9884 | } | |
9885 | ||
9886 | /* We don't increment mac_ptr here, so this is just | |
9887 | a look-ahead. */ | |
9888 | next_type = read_1_byte (abfd, mac_ptr); | |
9889 | if (next_type != 0) | |
4d3c2250 | 9890 | complaint (&symfile_complaints, |
e2e0b3e5 | 9891 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9892 | |
9893 | return; | |
9894 | } | |
9895 | } | |
9896 | break; | |
9897 | ||
9898 | case DW_MACINFO_vendor_ext: | |
9899 | { | |
891d2f0b | 9900 | unsigned int bytes_read; |
2e276125 JB |
9901 | int constant; |
9902 | char *string; | |
9903 | ||
9904 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9905 | mac_ptr += bytes_read; | |
9906 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9907 | mac_ptr += bytes_read; | |
9908 | ||
9909 | /* We don't recognize any vendor extensions. */ | |
9910 | } | |
9911 | break; | |
9912 | } | |
9913 | } | |
9914 | } | |
8e19ed76 PS |
9915 | |
9916 | /* Check if the attribute's form is a DW_FORM_block* | |
9917 | if so return true else false. */ | |
9918 | static int | |
9919 | attr_form_is_block (struct attribute *attr) | |
9920 | { | |
9921 | return (attr == NULL ? 0 : | |
9922 | attr->form == DW_FORM_block1 | |
9923 | || attr->form == DW_FORM_block2 | |
9924 | || attr->form == DW_FORM_block4 | |
9925 | || attr->form == DW_FORM_block); | |
9926 | } | |
4c2df51b | 9927 | |
c6a0999f JB |
9928 | /* Return non-zero if ATTR's value is a section offset --- classes |
9929 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
9930 | You may use DW_UNSND (attr) to retrieve such offsets. | |
9931 | ||
9932 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
9933 | may have a value that belongs to more than one of these classes; it | |
9934 | would be ambiguous if we did, because we use the same forms for all | |
9935 | of them. */ | |
3690dd37 JB |
9936 | static int |
9937 | attr_form_is_section_offset (struct attribute *attr) | |
9938 | { | |
9939 | return (attr->form == DW_FORM_data4 | |
9940 | || attr->form == DW_FORM_data8); | |
9941 | } | |
9942 | ||
9943 | ||
9944 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
9945 | zero otherwise. When this function returns true, you can apply | |
9946 | dwarf2_get_attr_constant_value to it. | |
9947 | ||
9948 | However, note that for some attributes you must check | |
9949 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
9950 | and DW_FORM_data8 are members of both the constant class, and of | |
9951 | the classes that contain offsets into other debug sections | |
9952 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
9953 | that, if an attribute's can be either a constant or one of the | |
9954 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
9955 | taken as section offsets, not constants. */ | |
9956 | static int | |
9957 | attr_form_is_constant (struct attribute *attr) | |
9958 | { | |
9959 | switch (attr->form) | |
9960 | { | |
9961 | case DW_FORM_sdata: | |
9962 | case DW_FORM_udata: | |
9963 | case DW_FORM_data1: | |
9964 | case DW_FORM_data2: | |
9965 | case DW_FORM_data4: | |
9966 | case DW_FORM_data8: | |
9967 | return 1; | |
9968 | default: | |
9969 | return 0; | |
9970 | } | |
9971 | } | |
9972 | ||
4c2df51b DJ |
9973 | static void |
9974 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9975 | struct dwarf2_cu *cu) |
4c2df51b | 9976 | { |
3690dd37 | 9977 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
9978 | /* ".debug_loc" may not exist at all, or the offset may be outside |
9979 | the section. If so, fall through to the complaint in the | |
9980 | other branch. */ | |
9981 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 9982 | { |
0d53c4c4 | 9983 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9984 | |
4a146b47 | 9985 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9986 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
9987 | baton->per_cu = cu->per_cu; |
9988 | gdb_assert (baton->per_cu); | |
4c2df51b | 9989 | |
0d53c4c4 DJ |
9990 | /* We don't know how long the location list is, but make sure we |
9991 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9992 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9993 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9994 | baton->base_address = cu->header.base_address; |
9995 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9996 | complaint (&symfile_complaints, |
e2e0b3e5 | 9997 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9998 | |
a67af2b9 | 9999 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
10000 | SYMBOL_LOCATION_BATON (sym) = baton; |
10001 | } | |
10002 | else | |
10003 | { | |
10004 | struct dwarf2_locexpr_baton *baton; | |
10005 | ||
4a146b47 | 10006 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 10007 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
10008 | baton->per_cu = cu->per_cu; |
10009 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
10010 | |
10011 | if (attr_form_is_block (attr)) | |
10012 | { | |
10013 | /* Note that we're just copying the block's data pointer | |
10014 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
10015 | info_buffer for SYM's objfile; right now we never release |
10016 | that buffer, but when we do clean up properly this may | |
10017 | need to change. */ | |
0d53c4c4 DJ |
10018 | baton->size = DW_BLOCK (attr)->size; |
10019 | baton->data = DW_BLOCK (attr)->data; | |
10020 | } | |
10021 | else | |
10022 | { | |
10023 | dwarf2_invalid_attrib_class_complaint ("location description", | |
10024 | SYMBOL_NATURAL_NAME (sym)); | |
10025 | baton->size = 0; | |
10026 | baton->data = NULL; | |
10027 | } | |
10028 | ||
a67af2b9 | 10029 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
10030 | SYMBOL_LOCATION_BATON (sym) = baton; |
10031 | } | |
4c2df51b | 10032 | } |
6502dd73 | 10033 | |
ae0d2f24 UW |
10034 | /* Return the OBJFILE associated with the compilation unit CU. */ |
10035 | ||
10036 | struct objfile * | |
10037 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
10038 | { | |
10039 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10040 | ||
10041 | /* Return the master objfile, so that we can report and look up the | |
10042 | correct file containing this variable. */ | |
10043 | if (objfile->separate_debug_objfile_backlink) | |
10044 | objfile = objfile->separate_debug_objfile_backlink; | |
10045 | ||
10046 | return objfile; | |
10047 | } | |
10048 | ||
10049 | /* Return the address size given in the compilation unit header for CU. */ | |
10050 | ||
10051 | CORE_ADDR | |
10052 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
10053 | { | |
10054 | if (per_cu->cu) | |
10055 | return per_cu->cu->header.addr_size; | |
10056 | else | |
10057 | { | |
10058 | /* If the CU is not currently read in, we re-read its header. */ | |
10059 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10060 | struct dwarf2_per_objfile *per_objfile | |
10061 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
10062 | gdb_byte *info_ptr = per_objfile->info_buffer + per_cu->offset; | |
10063 | ||
10064 | struct comp_unit_head cu_header; | |
10065 | memset (&cu_header, 0, sizeof cu_header); | |
10066 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
10067 | return cu_header.addr_size; | |
10068 | } | |
10069 | } | |
10070 | ||
ae038cb0 | 10071 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 10072 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
10073 | |
10074 | static struct dwarf2_per_cu_data * | |
10075 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
10076 | struct objfile *objfile) | |
10077 | { | |
10078 | struct dwarf2_per_cu_data *this_cu; | |
10079 | int low, high; | |
10080 | ||
ae038cb0 DJ |
10081 | low = 0; |
10082 | high = dwarf2_per_objfile->n_comp_units - 1; | |
10083 | while (high > low) | |
10084 | { | |
10085 | int mid = low + (high - low) / 2; | |
10086 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
10087 | high = mid; | |
10088 | else | |
10089 | low = mid + 1; | |
10090 | } | |
10091 | gdb_assert (low == high); | |
10092 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
10093 | { | |
10b3939b | 10094 | if (low == 0) |
8a3fe4f8 AC |
10095 | error (_("Dwarf Error: could not find partial DIE containing " |
10096 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
10097 | (long) offset, bfd_get_filename (objfile->obfd)); |
10098 | ||
ae038cb0 DJ |
10099 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
10100 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
10101 | } | |
10102 | else | |
10103 | { | |
10104 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
10105 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
10106 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 10107 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
10108 | gdb_assert (offset < this_cu->offset + this_cu->length); |
10109 | return this_cu; | |
10110 | } | |
10111 | } | |
10112 | ||
10b3939b DJ |
10113 | /* Locate the compilation unit from OBJFILE which is located at exactly |
10114 | OFFSET. Raises an error on failure. */ | |
10115 | ||
ae038cb0 DJ |
10116 | static struct dwarf2_per_cu_data * |
10117 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
10118 | { | |
10119 | struct dwarf2_per_cu_data *this_cu; | |
10120 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
10121 | if (this_cu->offset != offset) | |
8a3fe4f8 | 10122 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
10123 | return this_cu; |
10124 | } | |
10125 | ||
10126 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
10127 | of compilation units, but we don't remove it from the read_in_chain; | |
10128 | the caller is responsible for that. */ | |
10129 | ||
10130 | static void | |
10131 | free_one_comp_unit (void *data) | |
10132 | { | |
10133 | struct dwarf2_cu *cu = data; | |
10134 | ||
10135 | if (cu->per_cu != NULL) | |
10136 | cu->per_cu->cu = NULL; | |
10137 | cu->per_cu = NULL; | |
10138 | ||
10139 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
10140 | if (cu->dies) |
10141 | free_die_list (cu->dies); | |
ae038cb0 DJ |
10142 | |
10143 | xfree (cu); | |
10144 | } | |
10145 | ||
72bf9492 | 10146 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
10147 | when we're finished with it. We can't free the pointer itself, but be |
10148 | sure to unlink it from the cache. Also release any associated storage | |
10149 | and perform cache maintenance. | |
72bf9492 DJ |
10150 | |
10151 | Only used during partial symbol parsing. */ | |
10152 | ||
10153 | static void | |
10154 | free_stack_comp_unit (void *data) | |
10155 | { | |
10156 | struct dwarf2_cu *cu = data; | |
10157 | ||
10158 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10159 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
10160 | |
10161 | if (cu->per_cu != NULL) | |
10162 | { | |
10163 | /* This compilation unit is on the stack in our caller, so we | |
10164 | should not xfree it. Just unlink it. */ | |
10165 | cu->per_cu->cu = NULL; | |
10166 | cu->per_cu = NULL; | |
10167 | ||
10168 | /* If we had a per-cu pointer, then we may have other compilation | |
10169 | units loaded, so age them now. */ | |
10170 | age_cached_comp_units (); | |
10171 | } | |
10172 | } | |
10173 | ||
10174 | /* Free all cached compilation units. */ | |
10175 | ||
10176 | static void | |
10177 | free_cached_comp_units (void *data) | |
10178 | { | |
10179 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10180 | ||
10181 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10182 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10183 | while (per_cu != NULL) | |
10184 | { | |
10185 | struct dwarf2_per_cu_data *next_cu; | |
10186 | ||
10187 | next_cu = per_cu->cu->read_in_chain; | |
10188 | ||
10189 | free_one_comp_unit (per_cu->cu); | |
10190 | *last_chain = next_cu; | |
10191 | ||
10192 | per_cu = next_cu; | |
10193 | } | |
10194 | } | |
10195 | ||
10196 | /* Increase the age counter on each cached compilation unit, and free | |
10197 | any that are too old. */ | |
10198 | ||
10199 | static void | |
10200 | age_cached_comp_units (void) | |
10201 | { | |
10202 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10203 | ||
10204 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
10205 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10206 | while (per_cu != NULL) | |
10207 | { | |
10208 | per_cu->cu->last_used ++; | |
10209 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
10210 | dwarf2_mark (per_cu->cu); | |
10211 | per_cu = per_cu->cu->read_in_chain; | |
10212 | } | |
10213 | ||
10214 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10215 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10216 | while (per_cu != NULL) | |
10217 | { | |
10218 | struct dwarf2_per_cu_data *next_cu; | |
10219 | ||
10220 | next_cu = per_cu->cu->read_in_chain; | |
10221 | ||
10222 | if (!per_cu->cu->mark) | |
10223 | { | |
10224 | free_one_comp_unit (per_cu->cu); | |
10225 | *last_chain = next_cu; | |
10226 | } | |
10227 | else | |
10228 | last_chain = &per_cu->cu->read_in_chain; | |
10229 | ||
10230 | per_cu = next_cu; | |
10231 | } | |
10232 | } | |
10233 | ||
10234 | /* Remove a single compilation unit from the cache. */ | |
10235 | ||
10236 | static void | |
10237 | free_one_cached_comp_unit (void *target_cu) | |
10238 | { | |
10239 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10240 | ||
10241 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10242 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10243 | while (per_cu != NULL) | |
10244 | { | |
10245 | struct dwarf2_per_cu_data *next_cu; | |
10246 | ||
10247 | next_cu = per_cu->cu->read_in_chain; | |
10248 | ||
10249 | if (per_cu->cu == target_cu) | |
10250 | { | |
10251 | free_one_comp_unit (per_cu->cu); | |
10252 | *last_chain = next_cu; | |
10253 | break; | |
10254 | } | |
10255 | else | |
10256 | last_chain = &per_cu->cu->read_in_chain; | |
10257 | ||
10258 | per_cu = next_cu; | |
10259 | } | |
10260 | } | |
10261 | ||
fe3e1990 DJ |
10262 | /* Release all extra memory associated with OBJFILE. */ |
10263 | ||
10264 | void | |
10265 | dwarf2_free_objfile (struct objfile *objfile) | |
10266 | { | |
10267 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10268 | ||
10269 | if (dwarf2_per_objfile == NULL) | |
10270 | return; | |
10271 | ||
10272 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
10273 | free_cached_comp_units (NULL); | |
10274 | ||
10275 | /* Everything else should be on the objfile obstack. */ | |
10276 | } | |
10277 | ||
1c379e20 DJ |
10278 | /* A pair of DIE offset and GDB type pointer. We store these |
10279 | in a hash table separate from the DIEs, and preserve them | |
10280 | when the DIEs are flushed out of cache. */ | |
10281 | ||
10282 | struct dwarf2_offset_and_type | |
10283 | { | |
10284 | unsigned int offset; | |
10285 | struct type *type; | |
10286 | }; | |
10287 | ||
10288 | /* Hash function for a dwarf2_offset_and_type. */ | |
10289 | ||
10290 | static hashval_t | |
10291 | offset_and_type_hash (const void *item) | |
10292 | { | |
10293 | const struct dwarf2_offset_and_type *ofs = item; | |
10294 | return ofs->offset; | |
10295 | } | |
10296 | ||
10297 | /* Equality function for a dwarf2_offset_and_type. */ | |
10298 | ||
10299 | static int | |
10300 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
10301 | { | |
10302 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
10303 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
10304 | return ofs_lhs->offset == ofs_rhs->offset; | |
10305 | } | |
10306 | ||
10307 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
10308 | table if necessary. */ | |
10309 | ||
10310 | static void | |
10311 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10312 | { | |
10313 | struct dwarf2_offset_and_type **slot, ofs; | |
10314 | ||
10315 | die->type = type; | |
10316 | ||
10317 | if (cu->per_cu == NULL) | |
10318 | return; | |
10319 | ||
10320 | if (cu->per_cu->type_hash == NULL) | |
10321 | cu->per_cu->type_hash | |
10322 | = htab_create_alloc_ex (cu->header.length / 24, | |
10323 | offset_and_type_hash, | |
10324 | offset_and_type_eq, | |
10325 | NULL, | |
10326 | &cu->objfile->objfile_obstack, | |
10327 | hashtab_obstack_allocate, | |
10328 | dummy_obstack_deallocate); | |
10329 | ||
10330 | ofs.offset = die->offset; | |
10331 | ofs.type = type; | |
10332 | slot = (struct dwarf2_offset_and_type **) | |
10333 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
10334 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
10335 | **slot = ofs; | |
10336 | } | |
10337 | ||
1c379e20 DJ |
10338 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
10339 | have a saved type. */ | |
10340 | ||
10341 | static struct type * | |
10342 | get_die_type (struct die_info *die, htab_t type_hash) | |
10343 | { | |
10344 | struct dwarf2_offset_and_type *slot, ofs; | |
10345 | ||
10346 | ofs.offset = die->offset; | |
10347 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
10348 | if (slot) | |
10349 | return slot->type; | |
10350 | else | |
10351 | return NULL; | |
10352 | } | |
10353 | ||
10354 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
10355 | table saved in CU. */ | |
10356 | ||
10357 | static void | |
10358 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
10359 | { | |
10360 | struct die_info *die; | |
10361 | ||
10362 | if (cu->per_cu->type_hash == NULL) | |
10363 | return; | |
10364 | ||
10365 | for (die = start_die; die != NULL; die = die->sibling) | |
10366 | { | |
10367 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
10368 | if (die->child != NULL) | |
10369 | reset_die_and_siblings_types (die->child, cu); | |
10370 | } | |
10371 | } | |
10372 | ||
10b3939b DJ |
10373 | /* Set the mark field in CU and in every other compilation unit in the |
10374 | cache that we must keep because we are keeping CU. */ | |
10375 | ||
10376 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
10377 | ||
10378 | static void | |
10379 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
10380 | struct dwarf2_per_cu_data *ref_per_cu) | |
10381 | { | |
10382 | void **slot; | |
10383 | ||
10384 | if (cu->dependencies == NULL) | |
10385 | cu->dependencies | |
10386 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
10387 | NULL, &cu->comp_unit_obstack, | |
10388 | hashtab_obstack_allocate, | |
10389 | dummy_obstack_deallocate); | |
10390 | ||
10391 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
10392 | if (*slot == NULL) | |
10393 | *slot = ref_per_cu; | |
10394 | } | |
1c379e20 | 10395 | |
ae038cb0 DJ |
10396 | /* Set the mark field in CU and in every other compilation unit in the |
10397 | cache that we must keep because we are keeping CU. */ | |
10398 | ||
10b3939b DJ |
10399 | static int |
10400 | dwarf2_mark_helper (void **slot, void *data) | |
10401 | { | |
10402 | struct dwarf2_per_cu_data *per_cu; | |
10403 | ||
10404 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
10405 | if (per_cu->cu->mark) | |
10406 | return 1; | |
10407 | per_cu->cu->mark = 1; | |
10408 | ||
10409 | if (per_cu->cu->dependencies != NULL) | |
10410 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
10411 | ||
10412 | return 1; | |
10413 | } | |
10414 | ||
ae038cb0 DJ |
10415 | static void |
10416 | dwarf2_mark (struct dwarf2_cu *cu) | |
10417 | { | |
10418 | if (cu->mark) | |
10419 | return; | |
10420 | cu->mark = 1; | |
10b3939b DJ |
10421 | if (cu->dependencies != NULL) |
10422 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
10423 | } |
10424 | ||
10425 | static void | |
10426 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
10427 | { | |
10428 | while (per_cu) | |
10429 | { | |
10430 | per_cu->cu->mark = 0; | |
10431 | per_cu = per_cu->cu->read_in_chain; | |
10432 | } | |
72bf9492 DJ |
10433 | } |
10434 | ||
72bf9492 DJ |
10435 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10436 | is its offset in .debug_info for this objfile. */ | |
10437 | ||
10438 | static hashval_t | |
10439 | partial_die_hash (const void *item) | |
10440 | { | |
10441 | const struct partial_die_info *part_die = item; | |
10442 | return part_die->offset; | |
10443 | } | |
10444 | ||
10445 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10446 | are equal if they have the same offset. */ | |
10447 | ||
10448 | static int | |
10449 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10450 | { | |
10451 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10452 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10453 | return part_die_lhs->offset == part_die_rhs->offset; | |
10454 | } | |
10455 | ||
ae038cb0 DJ |
10456 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10457 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10458 | ||
10459 | static void | |
10460 | set_dwarf2_cmd (char *args, int from_tty) | |
10461 | { | |
10462 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10463 | } | |
10464 | ||
10465 | static void | |
10466 | show_dwarf2_cmd (char *args, int from_tty) | |
10467 | { | |
10468 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10469 | } | |
10470 | ||
6502dd73 DJ |
10471 | void _initialize_dwarf2_read (void); |
10472 | ||
10473 | void | |
10474 | _initialize_dwarf2_read (void) | |
10475 | { | |
10476 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10477 | |
1bedd215 AC |
10478 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10479 | Set DWARF 2 specific variables.\n\ | |
10480 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10481 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10482 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10483 | ||
1bedd215 AC |
10484 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10485 | Show DWARF 2 specific variables\n\ | |
10486 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10487 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10488 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10489 | ||
10490 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10491 | &dwarf2_max_cache_age, _("\ |
10492 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10493 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10494 | A higher limit means that cached compilation units will be stored\n\ | |
10495 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10496 | caching, which can slow down startup."), | |
2c5b56ce | 10497 | NULL, |
920d2a44 | 10498 | show_dwarf2_max_cache_age, |
2c5b56ce | 10499 | &set_dwarf2_cmdlist, |
ae038cb0 | 10500 | &show_dwarf2_cmdlist); |
6502dd73 | 10501 | } |